COLOMBIA, 1921, "$030" on 50c Pale Green, Air Post Surcharge (Colomphil 9; Scott C23).
Sheet margin at left, well-centered, centrally struck Bogota SCADTA handstamp, Very Fine, a total of nine used examples are recorded,
two of those on covers, signed A. Brun and with 2010 Colomphil certificate, Scott $1,450.00
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