Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Brazil - Pioneer Flight - 1931 (August 4), Dornier Do X Flight mixed franking postcard from Rio de Janeiro to Colombia, franked by five stamps, tied by Rio date stamps, black rhombus flight marking and Post of Spain (Trinidad) ''AU 19.31'' transit, upon arrival to Barranquilla uprated by three Colombian adhesives on picture side and forwarded to SCADTA Flight Barranquilla to Cali, arrival ds is alongside, F/VF, Est. $300-$350, Scott #C8, C18 x2, C20