Issue: Pro Juventute: Insects, Leonhard von Euler (Switzerland, 1957)

Sunday, December 1, 1957, Pro Juventute: Insects, Leonhard von Euler

Sunday, December 1, 1957 Switzerland will issue: Booklet "Pro Juventute 1957" face value 560+400,

Here you can manage your collection of postage stamps online.

Here you can manage your collection of postage stamps online.

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