COLOMBIA, 1921, "30 cent." on 10c Yellow (Colomphil 26; C37).
Two singles, used with two uncancelled National 3c stamps, tied by violet Bogota SCADTA cancels on orange-red cover Barranquilla, cover with some creasing, light file folds just affecting right 30c and small scrape at left of stamps (not affecting), backflap missing, otherwise Fine, believed to have only been used on the May 5, 1922 flight, only eleven covers
are recorded with this as the only known
example bearing multiple copies of the 30c stamp over-paying the double letter rate, with 1986 Rendon certificate
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