COLOMBIA, 1921, "Valor 30 Centavos" on 50c Pale Green, Damaged Violet Air Post Surcharge (Colomphil 23; Scott C20 var).
Clearly showing damage to letters of surcharge at bottom, violet Bogota and Barranquilla transit cancels, few light thins, Fine appearance, scarce with only six used examples
recorded, four of which are covers, signed Rendon
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