COLOMBIA, 1921, "Valor 30 ctvos, S.C.A.D.T.A." on 50c Pale Green, Air Post Surcharge (Colomphil 10; Scott C21).
Tied to small fragment of original piece by "14 Nov 1921" datestamp, well-struck violet "clock" cancel, minute corner crease at top left, otherwise Very Fine, less than 20 used examples
have been recorded, many of which are on cover, Scott $575.00
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