1921: '30 cent.' in violet on 10 c. yellow, surcharged at Girardot, a fine used example on May 1922 flown cover addressed to Berlin, cancelled by circular SERVICIO POSTAL AEREO / SCADTA / BOGOTA in violet with Colombia 5 c. blue pair adjacent tied in black. Fine and scarce, a most unusual usage of this rare provisional. Cert. Philatelic Foundation (2003) Scott = $ 575 off cover.
Overseas
Corinphila Auctions Ltd.
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