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VERY FINE AND CHOICE. ONLY THREE EXAMPLES ARE KNOWN.
Of the three recorded examples, only this one and one other are in a pair with normal stamp. Ex Plass and Drucker. Illustrated in Canal Zone Stamps on p. 77 (detail). With 1970 A.P.S. and 2003 P.F. certificates (Image)
VERY FINE APPEARING EXAMPLE OF THIS "CANAL" ONLY VARIETY. OF THE TEN THAT WERE PRINTED, ONLY THREE ARE KNOWN. A GREAT RARITY OF THE ISSUE.
According to Canal Zone Stamps, one pane of 100 was printed with the overprint shifted left, so that the right vertical row received "Canal" only and the other 90 stamps received the "Zone Canal" variety, Scott 24e (two of the 90 are known). Only three copies of Scott 24d are recorded: 1) single with part sheet margin at right, ex Plass lot 486, 2) in rejoined horizontal pair with "Zone Canal" variety, ex Plass lot 487, and 3) the example offered here, ex Drucker, offered in our Sale 856. (Image)
VERY FINE. A SCARCE BLOCK OF THEIS CANAL ZONE RARITY. OF THE 40 PAIRS PRINTED, ONLY 34 WERE SAVED.
According to Canal Zone Stamps, the first two vertical rows of perforations were omitted from four panes. Of the 40 pairs originally printed, only 34 were saved. One is known used.
With 1999 P.F. certificate (Image)
VERY FINE AND CHOICE. ONLY TEN COPIES OF THIS RARE ERROR WERE PRINTED AND ONLY FIVE ARE KNOWN.
According to Canal Zone Stamps, the overprint was originally printed too far to the right, and the left vertical row did not receive an overprint. To correct the error, the printer turned the pane, intending to print just the one missing row. However, he placed the pane too far into the press, thus two rows received the inverted overprint.
There are five copies known with the double overprint with one reading up (Scott 26a) and four known with the overprint reading up (Scott 26b). These were mostly contained in an irregular block of eight with four of No. 26b and three of 26a, which was broken up after the Plass sale.
Ex Plass as part of the irregular block of eight. With copy of 1969 A.P.S. certificate for the irregular block of eight, this was the top right stamp. (Image)