Issued by Austria in 1989, this elegant 5-Schilling commemorative celebrates the 100th birth anniversary of philosopher Ludwig Wittgenstein, one of the most influential thinkers of the 20th century. The stamp features a finely engraved portrait framed in a geometric border, highlighting Austria’s tradition of high-quality intaglio design. A small owl symbol—representing knowledge and thought—appears beside the portrait, adding thematic depth. This issue is prized for its crisp lines, classical layout, and significance in intellectual history, making it a strong addition to philosophical and Austrian commemorative collections.