2008 € 25 Carl Auer von Welsbach MS69 认证号32825601, PCGS号408120

(KM# 3157) Uncirculated Mintage: 65,000 - Minted to celebrate the 150th anniversary of the birth of chemist Carl bon Welsbach, one of the key figures in the development of the gas lamp. The coin’s green color is achieved by heat treating and oxidising the niobium core and applying an extra finish prior to its striking