West Germany. Silver 5 Mark “Humboldt” Coin.Mint Year: 1967 Reference: KM-120.1. Mint Place: Stuttgart (F) Denomination: 5 Mark - Wilhelm & Alexander von Humboldt.Material: Silver (.625) Diameter: 29mm Weight: 11.2gm Friedrich Wilhelm Christian Karl Ferdinand von Humboldt (22 June 1767 – 8 April 1835) was a Prussian philosopher, linguist, government functionary, diplomat, and founder of t ...