1958 AD., Austria, 100th anniversary birth of Auer von Welsbach commemorative, Vienna / Wien mint, 25 Schilling, KM 2884.

Austria, 100th anniversary birth of Auer von Welsbach commemorative, Vienna / Wien mint, engravers: Ludwig Hujer (obverse) and Arnold Hartig (rev.), 1958 AD.,
25 Schilling (30 mm / 12,94 g), 0.800 silver, 13,00 g theor. mint weight, mintage 4.999.500 , medal alignment ↑↑ , plain edge with incuse legend " * FUENFUNDZWANZIG SCHILLING * ",
Obv.: CARL AUER v. WELSBACH 1858 - 1929 / L. HUJER / · 1958 · , his bust facing r., engraver´s signature below.
Rev.: REPUBLIK / ÖSTERREICH // 25 / SCHILLING , value number within a beaded circle, small spray of leaves below, surrounded by 3/4 circle of nine shields of arms of the nine states of Austria.
KM 2884 .

Year / Mintage
1958 4,999,000
1958 500 (proof)

Carl Auer Freiherr von Welsbach (1 September 1858 – 4 August 1929) was an Austrian scientist and inventor who had a talent for not only discovering advances, but turning them into commercially successful products. He is particularly well known for his work on rare earth elements, which led to the development of the flint used in modern lighters, the gas mantle which brought light to the streets of Europe in the late 19th century, and the development of the metal filament light bulb.