| Descrizione |
1920, 10 c. Ocean Liner and biplane, used with additional franking on 4 March 1920 return flight cover from Barranquilla to Cartagena, tied by ''Compañía Colombiana de Navegación Aérea'' violet oval of Barranquilla, backstamped on receipt. Only four covers bearing this adhesive are recorded from this return flight, this being the scarcest stamp on cover of any of the two flights on which this issue was carried (Cartagena-Barranquilla and Barranquilla-Cartagena). Cert. Bortfeldt and P.F. (Rendon), signed Champion. Scott C10; Yv 9.
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