Switzerland 1955 National Philatelic Exhibition, Lausanne mini sheet on First Day Cover
Switzerland 1950 20r Tete Beche piar on Registered Grenchen registered Cover, Exhibition cancel
Switzerland 1938 National Philateliuc Exhibition, Aarau m/s on Reg. First Day Cover,
Switzerland 1939 Exhibition flight cover with Swissair cachet
Switzerland 1939 Exhibition registered flight cover with Swissair cachet
Switzerland 1939 Exhibition registered flight cover with cachet
Switzerland 2006 NABA National Stamp Exhibition, Baden miniature sheet on First Day Cover
