Pro Juventute -Stamps of Switzerland 1967-Butterflies
The theme for Pro Juventute issue of 1955 was Butterflies. Swiss Post issued a set of Five Stamps on 01 Dec 1955. A Commercially used Registered mail cover from Zurich to Limburg is listed.
The Personalities and Butterflies featured on stamps are
5+5 – Charles Pictet -de-Rochemont (1755-1824). Diplomat.
10+10 ct – Peacock Butterfly 20+10 ct – Giant Horntail.
30+10 ct – Purple Tiger 40+10 ct – Apollo
Stamp Digest 