Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - French Colonies - Niger - 1933 (March 20-25), First Air Mail Service Zinder - Algiers - Marseille, registered cover to Romanshorn (Switzerland), franked by 5 stamps, including stamp of 5fr, transit and arrival markings on reverse, minor soiling, still F/VF, Est. $100-$150, Sc. # 43/70