Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - French Equatorial Africa - Pioneer Flight covers - 1942, inverted black overprint ''Africa Française Libre'' on 2.50fr green and buff, used together with overprinted 8.50fr red brown and yellow on air mail registered cover from Fort-Lamy (now - N'Djamena) to Douala (Cameroon), French censorship tape and markings, VF and rare, C.v. $275 for stamp only, Scott #C1b, C14