COLOMBIA, 1921, (Hand) "Valor 10 Centavos" (Hand) on 50c Pale Green, Air Post Surcharge (Colomphil 3; Scott C19).
Violet "Navegacion Aerea, Neiva" handstamp cancel, parts of light doubling of surcharge but not significant enough for qualification for No. 3c, light bend, Fine appearance, only six used examples
are known plus only one recorded cover, Scott $825.00
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