Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Switzerland - Pioneer Flights - 1926 (November 26), Africa Flight registered cover from Zurich to Egypt, franked by four stamps, black boxed confirmation marking, Alexandria ''3.Dec.26'' arrival ds is alongside, undelivered and returned to Switzerland on December 21, appropriate hs on reverse, mostly VF and scarce, Est. $200-$250, Scott #C10