1978 Flamex 3
1978 Flamex 3 envelope. Postmarked 11 - 3 -78 (March 11, 1978) at Chateau-Thierry. The postmark includes text and illustration of FS celebrating Flamex 3, April 22-23, 1978. The envelope itself has a duochrome illustration of FS and text: "Flamex 3, 22-23 Avril 1978, Chateau-Thierry." $4 from Loic Marchat, Villeurbanne, France, through eBay, Oct., '05.
This envelope was sent by C. Ablard of Chateau-Thierry to J.C. Coste in Hérouville-St.-Clair. Flamex 3 seems to have been a philatelic exposition at Chateau-Thierry.