This Austrian 5 schilling stamp, issued in 1987, honors Erwin Schrödinger (1887–1961), one of the 20th century’s greatest physicists and a Nobel Prize laureate in Physics. The finely engraved portrait by A. Nefe, based on artwork by H. Herger, presents Schrödinger in meticulous linework, emphasizing his intellectual gaze and distinctive glasses. The inscription “Nobelpreisträger für Physik” (Nobel Laureate for Physics) acknowledges his 1933 Nobel Prize for his formulation of wave mechanics, a cornerstone of quantum theory. The minimalist sepia-brown design reflects both scientific precision and classical dignity—hallmarks of Austrian philatelic portraiture of the era.