CH 1940 Stamp Day St.Gallen SG, association card cancelled 1.XII.40 St.Gallen

Switzerland 1940 Stamp Day St.Gallen SG,
association card "1890-1940 - Verband Schweiz. Philatelisten-Vereine - Union des Societétés philatéliques suisses - Unione della Società filateliche svizzere",
50 Years Association with Coat of Arms, on the back advertising of the "Briefmarken Tausch Klub Bern,
cancelled "1.XII.1940 St.Gallen - Tag der Briefmarke - Journée du Timbre - Giornata del Francobollo", in good condition.