Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - French Sudan - 1942, Caravan and Airplane, 10fr ultramarine and sepia, left sheet margin single with double impression of the center, full OG, NH, VF and rare, Yvert #PA15a, C.v. €375, Est. $250-$300 , Scott #C11 var