TCoCD: Hermann von Helmholtz

(click for larger image, 47k)	Federal Republik of Germany, Berlin (27.08.1971) 25 Pf 27.5 * 33 mm Michel 401 The stamp was issued on the 150th anniversary of Helmholtz's birthday.
(click for larger image, 54k)	Federal Republic of Germany (08.09.1994) 100 Pf 43 * 26 mm Michel 1752 The stamp was issued on the 100th anniversary of Helmholtz's death and it references Helmholtz' research on the eye. It depicts a cross section of the human eye and its color space.
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