This Austrian 2-schilling commemorative stamp, issued in 1971, honors botanist and geneticist Erich Tschermak-Seysenegg, one of the three independent rediscoverers of Mendel’s laws of heredity. The finely engraved portrait by Otto Zeiller captures Tschermak’s scholarly presence with excellent line detail, printed in a subtle violet-brown tone on a light background. Released by the Republic of Austria, this stamp forms part of the nation’s tradition of celebrating scientific contributors. A desirable issue for collectors of genetics, science pioneers, Austrian personalities, and engraved portrait stamps.