CH 1941 Stamp Day Zurich ZH, card with imprint "UPG Geneve 1943" cancelled 7.XII.41 Zürich

Switzerland 1941 Stamp Day Zurich ZH,
official card "1291-1941 - Journée du Timbre - Tag der Briefmarke - Giornata del francobollo 1941",
with green imprint: "1843-1943 - Exposition de timbre-poste - organisee par - l'union philatelique - Geneve 1943 - centenaire du timbre de Geneve",
(Nationale Briefmarkenausstellung Genf - GEPH),
backwards with imprint of Swiss Stamp Association,
with Pro Juventute stamps, cancelled "7.XII.1941 Zürich - Schweizer Tag der Briefmarke", luxury conservation.