Hermann von Helmholtz 150th Birthday

Germany · 1971 · 40 Pf

The stamp features a portrait of Hermann von Helmholtz, facing slightly to the left, against a plain background. The denomination '40' is in the lower left, and 'DEUTSCHE BUNDESPOST' is along the bottom.

This stamp commemorates the 150th birthday of Hermann von Helmholtz, a prominent German polymath who made significant contributions to physics, physiology, and philosophy in the 19th century. It highlights Germany's recognition of its scientific heritage.