1956 West Germany set of 4 mint stamps

This set is from West Germany (Deutsche Bundespost), issued on October 1, 1956. It is the 1956 edition of the annual "Helfer der Menschheit" (Helpers of Humanity) charity series.

This year's theme focused on childhood and maternal care, while also continuing the tradition of honoring important figures in medical history. 

German charity stamps, these are "Semi-Postals" where the second number (e.g., "+3") was a donation to welfare organizations.