Switzerland 1968 50+20 block on Balloon Flight card with tied Label
Switzerland 1968 20+10 block on Balloon Flight card with tied Label
Switzerland 1968 30+10 block on Balloon Flight card with tied Label
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 1939 Geneva Red Cross Convention flight cover with cachet
Switzerland 1939 Airmail Exhibition cancel cover with airmail cachet to Italy
Switzerland 1946 Pro Aero illustrated First Day Cover, Luzern
