Pro Juventute -Stamps of Switzerland 1970-Birds
The theme for Pro Juventute issue of 1970 was Birds. Swiss Post issued a set of Four Stamps on 01 Dec 1970. A Commercially used Registered mail cover from Basel to Limburg is listed.
The Birds featured on stamps are
10+10 ct – Eurasian Tit 20+10 ct – Eurasian Hoopoe
30+10 ct – Great Spotted Woodpecker 50+20 ct – Great Crested Grebe.