P513-Switzerland 1966 Pro Patria FDC First Day Cover Helvetia Bundesfeier Bern 3
P512- Swiss Geneva 1967 Salon de l’Auto Cover with Helvetia Fox Stamp & Pr
P511-Swiss Geneva 1967 Salon de l’Auto Cover with Helvetia Fox Stamp & Pro Juven
P510-Switzerland 1967 Geneva Auto Salon Commemorative Cover with Pro Juventute S
P51-Switzerland 1979 Pro Juventute FDC Bern First Day Cover Helvetia 40c Stamp
P509-Switzerland 1967 Pro Juventute Squirrel Block FDC Geneva Salon de l’Auto Co
P508-Switzerland 1966 Pro Juventute Wildlife Registered FDC Cover with Animal St
P507-Switzerland 1966 Pro Juventute FDC Cover Wildlife Stamps Hare & Chamois Ber
P506-Switzerland 1967 Geneva Motor Show Cover with Europa CEPT 20c Block of 4 St
P505-Switzerland 1966 Pro Juventute Chamois FDC Cover – Block of 4 – Bern First
P504-Switzerland 1966 Pro Juventute Ermine FDC Block of 4 Helvetia Cover Bern Fi
P503-DDR Germany FDC 1985 Rare Trees Registered Cover Berlin Arboretum Floral St
