Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - GB Offices in Morocco - Zeppelin Flights - 1933 (July 1- 6), 3rd SAF registered cover to Brazil, franked by two stamps of 3p and 1s overprinted ''MOROCCO AGENCIES'', tied by oval Tanger ''22.JU.33'' date stamp, red connection and blue confirmation markings, Santos ''6.JUL.1933'' receiver, F/VF, Sieger #219, Est. $400-$450, Scott #213, 216