| 1639 |  | | #2, 5c Blue, fine single tied to cover to Panama by violet "Canal Zone" seven-bar killer, with matching "Canal Zone/Ancon/Jul 9 1904" c.d.s. alongside, Panama backstamp, several cover creases not affecting the adhesive, fresh and Fine; signed Champion and accompanied by 2005 A.P.S. certificate. | Est. $240- |
| 1640 |  | | #3, 10c Yellow, fresh and well centered, rich color on bright paper, light violet seven-bar cancel, Extremely Fine; 1981 A.P.S. certificate. | Est. $250- |
| 1641 |  | | #3a, 10c Yellow, "Canal Zone" inverted, particularly fresh, with lovely bright color, full original gum, Fine and scarce; only 200 stamps were issued; 1996 P.F. certificate. | Est. $775- |
| 1642 |   | | #4-8, 1c-10c Definitives cplt., scarce mint blocks of four, generally well centered for these, original gum, 8c h.r., 1c and 10c with hinged reinforced perf. separations, one each 5c and 10c with light gum stain, otherwise a Fine-Very Fine set. | Est. $2275- |
| 1643 |   | | #10a, 2c Rose, "Canal Zone" inverted, an incredibly fresh mint example, nicely centered amid large margins, deep rich color, pristine original gum, Never Hinged, Very Fine; it is estimated that only 240 stamps were issued. for hinged | Est. $225- |
| 1644 |   | | #11b, 2c Rose, "Panama" overprint inverted, bar at bottom, rare mint block of four, pos. 7-8, 17-18, with a natural s.e. at top, fresh and well centered, full original gum, Very Fine; only 200 stamps were issued. for singles | Est. $2700- |
| 1645 |  | | #11b, 2c Rose, "Panama" overprint inverted, bar at bottom, a pleasing mint example of this very rare error, rich color on fresh paper, part original gum, Fine; while it is evident that two sheets of 100 were issued, most were used and discarded, with only 35 copies on record. | Est. $675- |
| 1646 |  | | #12c, 5c Blue, "Canal Zone" double, excellent centering amid balanced margins, rich color, original gum, short perf. at bottom center, otherwise Extremely Fine; while two panes of 100 were produced, one pane was postally used on mail to the West Indies and most copies were lost to philately. | Est. $800- |
| 1647 |  | | #12c, 5c Blue, "Canal Zone" double, an elusive used example, lightly cancelled, tiny thin spot and pulled corner perf. at bottom right, otherwise Fine; while two panes of 100 were produced, one pane was postally used on mail to the West Indies and most copies were discarded. | Est. $800- |
| 1648 |  | | #13 Var., 10c Yellow, "Pamana" reading down, rich fresh color, tropical original gum, Fine; only 200 stamps were issued; signed "HFC" (Colman). | Est. $200- |
| 1649 |  | | #13a, 13b, 10 Yellow, "Canal" in antique type and "Zone" in antique type, mint singles of each, fresh colors, original gum, Fine-Very Fine; only 200 and 400 of each were issued respectively. | Est. $375- |
| 1650 |  | | #13c, 10c Yellow, "Panama" overprint double, pos. 11-12, horizontal pair, the right stamp the error, lovely bright color, strong and intact perforations, tropicalized original gum, Fine and scarce, especially as a se-tenant pair with normal; only 80 stamps were issued, 1993 P.F. certificate; Ex.-Plass. | Est. $672.50- |
| 1651 |  | | #14 Var., 8c on 50c Bister brown, spaced "A L" in "Canal", choice mint single, outstanding centering, luxuriant deep color, original gum, small h.r., fresh and Extremely Fine; only 194 stamps were issued. | Est. $175- |
| 1652 |  | | #14b, 8c on 50c Bister brown, "Canal Zone" inverted, particularly fresh, strong color, original gum, light h.r., Fine; only 200 stamps were issued. | Est. $450- |
| 1653 |  | | #14b, 8c on 50c Bister brown, "Canal Zone" inverted, particularly fresh mint single, well centered, rich color, full clean original gum, lightly hinged, Very Fine; only 200 stamps were issued. | Est. $450- |
| 1654 | ( ) | | #14f, 8c on 50c Bister brown, "Panama" overprint in rose brown, "8 cts" double, unused, deep rich color on fresh white paper, pulled perforation at top right, otherwise Fine and rare; a mere 30 examples were issued. | Est. $1100- |
| 1655 |  | | #15, 8c on 50c Bister brown, Ty. "a" overprint with both "Panama" reading up, pos. 92, deep rich color, original gum, reperforated at bottom, Fine appearance; 1993 A.P.S. certificate. | Est. $2600- |
| 1656 |   | | #19, 8c on 50c Bister brown, Ty. c surcharge, mint block of four, nicely centered and fresh, original gum, small h.r., Fine-Very Fine. | Est. $250- |
| 1657 |  | | #20a, 20c, 8c on 50c Bister brown, "Canal" in antique type and "Zone" in antique type, mint singles of each, original gum, Fine; only 196 stamps of each were issued; former with 1993 P.S.E. certificate. | Est. $400- |
| 1658 |  | | #20c, 8c on 50c Bister brown, "8 cts" surcharge omitted, fresh and well centered, deep rich color, full original gum, Very Fine and rare; only 50 error stamps were issued. | Est. $800- |
| 1659 |  /  | | #21-26, 1c-10c Definitives cplt., mint blocks of four, generally well centered, original gum, 1c and 5c Never Hinged, Fine to Extremely Fine set. | Est. $411.50- |
| 1660 |  | | #22 Var., 1c Green and black, imperforate at bottom, between stamp and sheet-margin, bottom margin part imprint single, well centered, original gum, h.r., Very Fine and scarce (C.Z.S.G. #22.2). | Est. $300-400 |
| 1661 | ( ) | | #22a, 1c Green and black, imperforate between, unused horizontal pair from the soft paper 7.25mm spacing printing, rich colors, s.e. at right, small thinned spots, Fine appearance; only 50 pairs were produced. | Est. $1300- |
| 1662 |  | | #22d, 1c Green and black, "Canal Zone" inverted reading up, from the soft paper 7.25mm spacing printing, choice centering, rich colors on bright paper, part original gum, choice Very Fine; only 100 stamps were issued. | Est. $550- |
| 1663 |  | | #23c, 2c Red and black, Canal Zone" double, from the hard paper 7.25mm spacing printing, with the overprints nearly coincident, luxuriant colors, somewhat disturbed original gum, nearly Very Fine; only 100 stamps were issued. | Est. $650- |
| 1664 |   | | #23e, 2c Red and black, "Canal Zone" double, one diagonal, handsome bottom sheet-margin part imprint block of four, from the hard paper, 7.25 mm spacing printing, top stamps the errors and the bottom pair normal, well centered, disturbed tropical original gum as always on this, Very Fine and very rare; a wonderful Canal Zone rarity, with only seven pairs recorded, comprised of four horizontal and three vertical se-tenant pairs; 1967 P.F. certificate; Ex.-Plass. for two error pairs | Est. $5000- |
| 1665 |   | | #23h, 2c Red and black, "Canal Zone" double, one diagonal reading "Zone Canal", combination block of four from the hard paper, 7.25 mm spacing printing, the top stamps with the second diagonal overprint reading "Zone Canal" and the bottom stamps with double overprint, one diagonal (#23d), disturbed tropical original gum as always, Very Fine; a great Canal Zone error with only seven examples recorded; 1969 A.P.S. certificate; Ex. Plass. for singles | Est. $9600- |
| 1666 | ( ) | | #24c, 5c Ultramarine and black, "Canal Zone" double, from the solitary sheet of 100 from the hard paper 7.25mm spacing printing, unused, well centered (the 6.75mm spacing sheet is quite poorly centered), tiny thin spot, Very Fine appearance; only 200 double overprint errors were issued. | Est. $500- |
| 1667 |   | | #27-30, 2c-10c Definitives, overprints reading down cplt., fresh mint blocks of four, generally well centered, full clean original gum, lightly hinged, Fine-Very Fine set. | Est. $657.50- |
| 1668 | BP | | #31c, 1c Dark green and black, horizontal booklet pane of six, handmade, perforated margins, with tab at right, fresh and intact, full clean original gum, Fine; 1992 A.P.S. certificate. | Est. $575- |
| 1669 | BP | | #32c, 2c Vermilion and black, vertical booklet pane of six, handmade, perforated margins, with tab at bottom, crisp and intact, original gum, h.r., fresh and Fine; 1992 A.P.S. certificate. | Est. $750- |
| 1670 |  | | #33a, 5c Deep blue and black, "Canal Zone" double, select mint single, exceptionally well centered for this often poorly centered error, wonderfully fresh, luxuriant colors, full fresh original gum, lightly hinged, Very Fine; only 200 stamps were issued. | Est. $375- |
| 1671 |  | | #33a, 5c Deep blue and black, "Canal Zone" double, rich colors, original gum, h.r., Fine and scarce; only 200 stamps were issued; signed "HFC" (Colman). | Est. $375- |
| 1672 |  | | #36a, 10c on 13c Gray, "10 cts." inverted, scarce mint single, original gum, a couple gum soaked perfs. at top left, otherwise Very Fine; signed "HFC" (Colman). | Est. $350- |
| 1673 |  | | #36b, 10c on 13c Gray, "10 cts." omitted, fresh and well centered, full clean original gum, Very Fine and scarce; only a single pane of 100 escaped detection by the Canal Zone postal inspectors. | Est. $350- |
| 1674 |    | | #37, 10c Gray, bottom left corner margin block of four, post office fresh, original gum, one stamp natural gum skip, Never Hinged, Fine. for hinged | Est. $230- |
| 1675 | BP | | #38b, 1c Green and black, booklet pane of six, imperforate margins, machine made with 7.75mm spacing, wide margins all around, fresh and intact, tropical original gum, Very Fine. | Est. $625- |
| 1676 |   | | #39d, 2c Vermilion and black, "Canal Zone" inverted reading down, mint block of four, strong fresh colors, original gum with a bit of interleaving adhearing to one, Fine; it is believed that three of four panes of this error were issued. for singles | Est. $800- |
| 1677 |  | | #39d, 2c Vermilion and black, "Canal Zone" inverted reading down, a gem mint example, boasting virtually perfect centering amid balanced margins, original gum, fresh and Extremely Fine; it is believed that three of four panes of this error were issued. | Est. $200- |
| 1678 |    | | #39e, 2c Vermilion and black, inverted center and "Canal Zone" inverted reading down, post office fresh left sheet-margin mint block of four, deep rich colors, strong and intact, pristine original gum, Never Hinged, Very Good to Fine; blocks of four are very few and far between. for hinged singles | Est. $2400- |
| 1679 |  | | #39e, 2c Vermilion and black, inverted center and "Canal Zone" inverted reading down, deep rich colors, original gum, h.r., small shallow thin spot at left center, Fine appearance; it is believed that four sheets of 100 with inverted centers were produced, two of which were used to produce booklet panes. | Est. $600- |
| 1680 |   | | #39e, 2c Vermilion and black, inverted center and "Canal Zone" inverted reading down, an exceptional mint example, large margins, post office fresh, vivid rich colors on crisp white paper, pristine original gum, Never Hinged, choice Very Fine; one of only 400 issued from which only 132 were of regular stamp stock; 1986 P.F. certificate. for hinged | Est. $600- |
| 1681 |   | | #42-45, 49-51, 1c- 24c Pictorials cplt., mint blocks of four, generally well centered, usual slightly tropical original gum, the 1c with some interleaving adhearing, Fine-Very Fine set. | Est. $752.50- |
| 1682 |    | | #42-45, 1c-10c Pictorials cplt., immaculate set of mint blocks of four, 1c-5c with right sheet-margin and guide marker, post office fresh, pristine original gum, Never Hinged, Fine-Very Fine. for hinged | Est. $225- |
| 1683 |  | | #42-45, 49-51, 58-59S, 1c-1b Pictorials, overprinted "Specimen" in red cplt., each with additional security punch, original gum, Never Hinged, 50c pulled perf. at top and perfs. touch 1b, otherwise a Fine-Very Fine set. | Est. $150-200 |
| 1684 |  | | #46b, 1c Light green and black, "Canal Zone" double, attractive mint single from the error sheet that had the two overprints well apart, tropical original gum, nearly Very Fine; fewer than 80 examples with the overprint widely spaced were printed. | Est. $350- |
| 1685 |  | | #46b, 1c Light green and black, "Canal Zone" double, from the error sheet that had the two overprints well apart, original gum, nearly Very Fine; fewer than 80 examples with the overprints widely spaced were printed. | Est. $350- |
| 1686 |   | | #46d, 1c Green and black, "Canal Zone" double, one reading "Zone Canal", a remarkable top sheet-margin guide marker combination block of four, from the sheet that received the two overprints widely spaced, the top stamps both the error and the bottom pair with normal double overprint (#46b), usual tropical original gum, Fine-Very Fine and very rare; only 18 examples of this error variety were printed, this block contains two se-tenant with normal double overprint pairs; 1993 P.F. certificate; Ex. Plass. for singles | Est. $4700- |
| 1687 |  | | #47, 2c Orange vermilion and black, strong color on fresh paper, original gum, h.r., Fine and scarce. | Est. $3250- |
| 1688 |  | | #48, 5c Deep blue and black, from the first printing in 1915 with "Canal" 10.7mm long, a gorgeous mint example of this scarce stamp, incredibly well centered, deep rich color on bright white paper, full fresh original gum, Extremely Fine. | Est. $500- |
| 1689 |  | | #48 Var., 5c Deep blue and black, "E" of "Zone" under "L" of "Canal", precisely centered and quite fresh, full original gum, Very Fine and scarce; 2003 P.F. certificate (C.Z.S.G. #48.2). | Est. $500-750 |
| 1690 |    | | #52, 1c Green and black, top left corner margin "1 Centesimo No." imprint block of ten, nicely centered and post office fresh, pristine original gum, Never Hinged, Fine-Very Fine. for hinged | Est. $365- |
| 1691 | BP | | #52b, 1c Green and black, booklet pane of six, crisp and intact, original gum, lightly hinged, Very Fine. | Est. $650- |
| 1692 | BP | | #53c, 2c Vermilion and black, booklet pane of six, particularly well centered, strong and intact, full fresh original gum, lightly hinged, Very Fine. | Est. $1050- |
| 1693 |   | | #54, 5c Deep blue and black, pristine mint single, deep luxuriant colors, immaculate original gum, Never Hinged, Very Fine. for hinged | Est. $150- |
| 1694 |  | | #55a, 1c Light green and black, "Canal Zone" inverted reading down, bright and fresh, full clean original gum, lightly hinged, Fine. | Est. $300- |
| 1695 | ( ) | | #56a, 2c Orange vermilion and black, "Canal Zone" double, precisely centered, rich fresh colors, regummed, Extremely Fine; only 100 stamps were issued; 1993 P.S.E. certificate. | Est. $600- |
| 1696 |  | | #56a Var., 2c Orange vermilion and black, "Canal Zone" double, "Z" of "Zone" under "C" of "Canal", full original gum, Fine and rare; 1984 A.P.S. certificate. | Est. $600- |
| 1697 |  | | #56b, 2c Orange vermilion and black, "Canal Zone" double, one inverted reading down, typical centering for this, rich color on fresh paper, full clean original gum, lightly hinged, Fine for this; only 100 stamps were issued; 1992 P.S.E. certificate. | Est. $650- |
| 1698 |   | | #57, 5c Deep blue and black, scarce left sheet-margin mint block of four, rich colors, tropical original gum, Fine. | Est. $1350- |
| 1699 |   | | #60-66, 1c-50c Definitives cplt., blocks of four, generally well centered, original gum, h.r.'s, two 50c with thinned spot, otherwise Fine-Very Fine. | Est. $1506- |
| 1700 | BP | | #60b, 1c Green, booklet pane of six, original gum, a few reinforced perforations at left, Fine. | Est. $1000- |
| 1701 |  | | #69S Footnote, 1c-2c and 5c-$1.00 Arms unissued values, handstamped "Specimen" in red cplt., including the issued 1c and 2c, with additional security punch, original gum, Never Hinged, fresh and Fine-Very Fine; Ex.-American Bank Note Co. Archives. | Est. $200-300 |
| 1702 |  | | #69 Footnote, 5c-$1.00 Arms unissued values cplt., the seven values as prepared but never placed on sale in the Canal Zone because of the abrogation of the Taft Agreement, all with good colors, tropical original gum, except 10c unused, Fine-Very Fine set; actually very rare, of the 600 sets produced and returned to Panama for distribution to U.P.U. members, only a small number were actually sold to collectors and the remainder were destroyed; only twelve complete sets have been recorded by the Canal Zone Study Group (CZSG 69A-G). | Est. $2450- |
| 1703 |  | | #69 Footnote, 5c-24c and $1.00 Arms unissued values, complete but for the 50c value, original gum or tropical original gum, Fine-Very Fine; these were prepared but never placed on sale in the Canal Zone due to the abrogation of the Taft Agreement, of the 600 sets produced and returned to Panama for distribution to U.P.U. members, only a small number were actually sold to collectors and the remainder destroyed. | Est. $2100- |
| 1704 |  /  | | #70-80, 1c-50c Values, mint blocks of four, some with sheet-margin and plate no., most remarkably fresh and well centered, original gum, many Never Hinged including three 50c values, one 5c thin spot, otherwise Fine-Very Fine. | Est. $1512.50- |
| 1705 |  | | #70-81, 1c-$1.00 Definitives cplt., original gum, Fine-Very Fine. | Est. $523.50- |
| 1706 |  | | #71a, 1c Deep green, "Canal Zone" inverted, original gum, nearly Fine. | Est. $500- |
| 1707 |   | | #71b, 1c Deep green, "Zone" inverted, pos. 30LL, with natural s.e. at right as always, the center right stamp in a block of six (2x3), original gum, Fine. | Est. $357- |
| 1708 |  | | #71d, 1c Deep green, "Zone Canal", from the second printing, coming from the bottom nine rows of two panes of 100 that produced the "Zone" only errors, rich color on fresh paper, original gum (certificate states "disturbed o.g."), Fine; only 180 stamps were issued; 1979 A.P.S. certificate. | Est. $500- |
| 1709 | BK | | 1c Deep Green, booklet pane of six, complete unexploded booklet of four panes, all well centered, original gum which is slightly disturbed from interleaving as usual, Very Fine, the booklet Extremely Fine without a fold at the staple. for four panes | Est. $320- |
| 1710 | PB | | #74, 5c Dark blue, choice bottom margin plate no. 15148 block of six, wonderfully well centered throughout, intense color on fresh paper, original gum, lightly hinged, four stamps Never Hinged, Extremely Fine. | Est. $325- |
| 1711 | PB | | #76, 12c Brown violet, full top margin plate no. 15352 block of six, crisp and intact, original gum, lightly hinged, Fine-Very Fine. | Est. $475- |
| 1712 | PB | | #77, 14c Dark blue, full top margin plate no. 14515 block of six, fresh and intact, original gum, lightly hinged in the ungummed selvage only, the stamps Never Hinged, Fine-Very Fine. | Est. $425- |
| 1713 | PB  | | #77, 14c Dark blue, excellent full top margin plate no. 14513 block of six, post office fresh, luxuriant color, crisp and intact perforations, original gum, Never Hinged, Very Fine; Ex.-Wampler. for hinged | Est. $425- |
| 1714 |  /  | | #84-93, 2c-30c Values, mint blocks of four, most very fresh and well centered, original gum, many including 2c, 14c, 15c, 20c and 30c Never Hinged, Fine-Very Fine. | Est. $794.50- |
| 1715 |  | | #84b, 2c Carmine, "Zone Canal", deep rich color and quite fresh, full clean original gum, lightly hinged, Fine; only 180 stamps were issued. | Est. $500- |
| 1716 |   | | #84b, 2c Carmine, "Zone Canal", exceptionally fresh mint example, intense color, pristine original gum, Never Hinged, Fine and scarce; only 180 stamps were issued. for hinged | Est. $500- |
| 1717 | PB  | | #85, 3c Violet, handsome full top margin plate no. 16402 block of six, fresh and well centered, crisp and intact, original gum, Never Hinged, Very Fine. for hinged | Est. $175- |
| 1718 | PB | | #85, 3c Violet, handsome and choice full top margin plate no. 16474 block of six, wonderfully well centered, strong and intact, full fresh original gum, Extremely Fine. | Est. $175- |
| 1719 |   | | #85a, 3c Violet, "Zone Zone", pos. 18LR, the center stamp in a top margin block of nine, original gum, nearly Fine. | Est. $632- |
| 1720 |   | | #85a, 3c Violet, "Zone Zone", pos. 2 in a right sheet-margin block of eight (4x2), deep rich color, original gum, lightly hinged, Fine. | Est. $621- |
| 1721 |  | | #86b, 5c Dark blue, "Canal" inverted, pos. 7 LR from the second printing, horizontal pair with normal, the right stamp the error, natural s.e. at top as always, rich color, tropical original gum as usual, Fine and rare. | Est. $950- |
| 1722 |  | | #86b, 5c Dark blue, "Canal" inverted, pos. LR7, the right stamp in a horizontal pair with normal, natural s.e. at top as always, slightly disturbed original gum from interleaving as often, Fine and rare. | Est. $950- |
| 1723 |  | | #86c, 5c Dark blue, "Canal Zone" inverted, fresh, original gum, Fine; 1993 P.S.E. certificate. | Est. $500- |
| 1724 |  | | #86e, 5c Dark blue, "Zone Canal", full fresh original gum, lightly hinged, Fine and scarce; this error was caused by the overprint plate being shifted too far downwards during the printing of a single pane, creating all 90 known examples. | Est. $350- |
| 1725 | PB | | #87, 10c Orange, bottom margin plate no. 16377 block of six, radiant color, strong and intact, original gum, lightly hinged, Fine. | Est. $500- |
| 1726 | PB | | #88, 12c Brown violet, top margin plate no. 15351 block of six, original gum, Fine-Very Fine. | Est. $375- |
| 1727 | PB | | #91, 17c Black, full top margin plate no. 18023 block of six, crisp and intact, original gum, h.r., Very Fine. | Est. $190- |
| 1728 |  | | #91c, 17c Black, "Zone Canal", nicely centered and fresh, original gum, Very Fine; only 270 stamps were issued. | Est. $300- |
| 1729 |  | | #91c, 17c Black, "Zone Canal", rich color, tropical original gum, Fine and scarce; only 270 stamps were issued. | Est. $300- |
| 1730 | PB | | #93, 30c Olive brown, full top margin plate no. 17449 block of six, fresh and well centered, strong and intact perforations, original gum, lightly hinged, natural gum bend, Extremely Fine. | Est. $250- |
| 1731 |    | | #95, $1.00 Violet brown, fresh left sheet-margin mint block of four, pristine original gum, Never Hinged, Fine-Very Fine. for singles | Est. $900- |
| 1732 |  /  | | #95, $1.00 Violet brown, bottom margin arrow block of four, full fresh original gum, left pair with barest trace of hinging and the right pair Never Hinged, Fine. for singles | Est. $750- |
| 1733 | PB | | #97, 2c Carmine, top right corner margin plate no. 18632 block of four, original gum, h.r.'s at top, bottom pair Never Hinged, Fine. | Est. $475- |
| 1734 | PB  | | #98, 3c Violet, top right corner margin plate no. 18445 block of four, exceptionally well centered, post office fresh, pristine original gum, Never Hinged, choice Very Fine. for hinged | Est. $120- |
| 1735 | PB | | #100-04, 1c-10c Definitives cplt., plate blocks of four, fresh and intact, original gum, 1c and 2c Never Hinged, 5c and 10c lightly hinged, Fine-Very Fine set. | Est. $524- |
| 1736 | BP | | #115c, 3c Deep violet, booklet pane of six, handmade, perforated margins, in the horizontal format with tab at left, choice centering, fresh and intact, original gum, barest trace of possible hinging, Extremely Fine. | Est. $175- |
| 1737 |  /  | | #120-35, 1c-50c 25th Anniversary of Panama Canal cplt., blocks of four, fresh and well centered, original gum, Never Hinged except two 50c very lightly hinged, Fine to mostly Very Fine set. | Est. $662- |
| 1738 | PB /  | | #120-35, 1c-50c 25th Anniversary of Panama Canal cplt., a seldom seen set of top or bottom margin plate blocks of six, well centered and fresh, crisp and intact, original gum, occasional natural gum skip, 2c, 12c, 18c and 50c lightly hinged, the others all Never Hinged, Very Fine and scarce. | Est. $2372- |
| 1739 |   | | #157a, 4c Thatcher Ferry Bridge, silver (bridge) omitted, pos. 44, handsome mint example of this perennially popular Canal Zone error, well centered, original gum, Never Hinged, Extremely Fine; only a single sheet of 200 stamps in known to have had the silver omitted, of these, three were discovered by the Canal Zone postal authorities, one of which was destroyed and the other two were placed permanently in museums, thus only a single pane of 50 reached philatelic hands, as it was inadvertently sent to the H.E. Harris Co. as part of their order of 5,000 stamps, in addition, this is the only non-overprinted ordinary error stamp of the Canal Zone; photocopies of 1979 Friedl, 1990 P.S.E. and 1970 and 2005 P.F. certificates for a block of four, this being the top left stamp. | Est. $7500- |
| 1740 |    | | #C2, 15c on 1c Yellow green, Ty. II, block of four, original gum, Never Hinged, bottom right stamp with a natural pre-printing paper crease, otherwise Fine-Very Fine; 1989 P.F. certificate. | Est. $340- |
| 1741 | PB /  | | #C6-14, 4c-$1.00 Gaillard Cut cplt., top or bottom margin plate blocks of four, fresh and well centered, original gum, 20c h.r. and 30c with slight gum glaze, others all Never Hinged, Very Fine set. | Est. $206- |
| 1742 | PB  | | #C15-20, 25th Anniversary of Panama Canal cplt., top or bottom margin plate blocks of six, wonderfully fresh, generally well centered, original gum, Never Hinged, 25c gum skip, Fine to mostly Very Fine set. | Est. $1077.50- |
| 1743 |  /  | | #CO1-7, CO14, 5c-$1.00 Air post officials cplt., blocks of four, original gum, 6c, 10c, 20c and 40c Never Hinged, two 30c with shallow thinned spots, otherwise Fine-Very Fine. | Est. $477.50- |
| 1744 |   | | #CO8, 5c Yellow green, Ty. II overprint, scarce block of four, cancelled-to-order with roller as usual, original gum, Never Hinged, Fine. | Est. $925- |
| 1745 |  | | #CO8-12, 5c-40c Ty. II Airpost official overprints cplt., cancelled-to-order with roller as usual, 10c no gum, the others full fresh original gum, Never Hinged, Fine-Very Fine set. | Est. $855- |
| 1746 |   | | #CO11, 30c Rose lake, Ty. II overprint, block of four, cancelled-to-order with roller as usual, original gum, Never Hinged, Fine. | Est. $325- |
| 1747 |  | | #J4-6, 1c-10c Postage Dues cplt., original gum, lightly hinged, except 10c part o.g., Very Fine set. | Est. $287.50- |
| 1748 |   | | #J6, 10c Olive brown, handsome top left corner margin block of four, choice centering, original gum, Extremely Fine. | Est. $225- |
| 1749 |   | | #J7-9, 1c on 1c-10c on 10c Postage Dues cplt., blocks of four, key 1c value a top margin imprint block and 2c with bottom sheet-margin, full fresh original gum, lightly hinged, Very Fine. | Est. $710- |
| 1750 |    | | #J9, 10c on 10c Olive brown, mint block of 12 (6x2), post office fresh and well centered, pristine original gum, Never Hinged, Fine to Extremely Fine. for hinged | Est. $300- |
| 1751 | PB | | #J17, 10c Orange, left margin plate no. 15511 block of six, radiant color, original gum, Fine-Very Fine. | Est. $500- |
| 1752 |  | | #J17a, 10c Orange, "Postage Due" double, vivid rich color, disturbed original gum, Fine and rare; only 98 examples were issued. | Est. $800- |
| 1753 |  | | #J17a, 10c Orange, "Postage Due" double, pos. 38, select mint example, well centered amid uncommonly large margins, full original gum, choice Very Fine; only a single sheet of 100 was discovered. | Est. $800- |
| 1754 |  | | #J17b, 10c Orange, "E" of "Postage" omitted, pos. 83, not showing a trace of the vertical bar of "E" that most examples from this position do, horizontal pair with normal, the right stamp the error, original gum, h.r., normal stamp with natural gum crease, error Fine and scarce, especially without the natural s.e. that all copies from pos. 93 have. | Est. $800- |
| 1755 | PB | | #J19, 2c Carmine rose, right margin plate no. 14027 block of six, crisp and intact, original gum, Fine-Very Fine. | Est. $160- |
| 1756 |  | | #J20c, 10c Rose red, "Canal Zone" double, wonderfully fresh, centered a bit to top as usual, full clean original gum, barest trace of hinging, Fine and rare; only a single sheet of 100 was issued. | Est. $450- |
| 1757 |   | | #J20c, 10c Rose red, "Canal Zone" double, rich color on fresh paper, original gum, Never Hinged, Very Good; only a single sheet of 100 was issued; photocopy of 1997 P.F. certificate for a block of four, this being the top left stamp. for hinged | Est. $450- |
| 1758 |    | | #O1-7, O9, 1c-50c Officials, Ty. I overprints cplt., mint blocks of four, except #O3 cancelled-to-order with roller as nearly always, original gum, Never Hinged, Fine-Very Fine set. for singles | Est. $573- |
| 1759 |  | | #O8, 50c Rose lilac, Ty. Ia overprint, cancelled-to-order with roller as always, original gum, very lightly hinged, nearly Very Fine; 1981 A.P.S. certificate. | Est. $650- |
| 1760 |  | | #O8, 50c Rose lilac, Ty. Ia overprint, considerably better centered and margined than usual, precancelled as always, original gum, choice Very Fine. | Est. $650- |
| 1761 |   | | #U1-2, 1c Green and black and 3c Red and black, mint entires of each, Very Fine. | Est. $185- |
| 1762 |   | | #U5, 2c Carmine, mint entire, fresh and Very Fine. | Est. $200- |
| 1763 |   | | #U15, 3c on 2c Carmine, mint entire, fresh and Extremely Fine. | Est. $250- |
| 1764 |   | | #UX2, 1c Green and black postal card, fresh stock with sharp corners, Extremely Fine. | Est. $190- |
| 1765 |   | | #UX3, 1c Green and black postal card, clean and fresh, Very Fine. | Est. $190- |