Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - GB Offices in Morocco - Zeppelin Flights - 1933 (September 2-6), 6th SAF registered cover from Casablanca to Brazil, franked by two French currency surcharges on King George V high values, cancelled by oval ''22.AU.33''ds, red connection and dark blue flight markings, Pernambuco ''6.IX.33'' arrival hs is alongside, mostly VF and scarce, Sieger #229, Est. $400-$450, Scott #410, 419