Germany. A Wartime Labour Book to Naval Mine Physicist Hans Mössle

Measuring 107x147mm, extremely fine condition with light scuffing and scratching of the cover. It is dated to February 2, 1941. Mössle was born on May 11, 1915 in Ludwigsburg. He worked in Kiel-Wik (northern Germany) for the Sperrversuchskommando as a physicist. The Sperrversuchskommando was a subdivision of the Sperrwaffeninspektion. Sperrwaffen is the generic term for all naval mines. Presumably the Sperrversuchskommando tested new types of mines (Versuch = experiment).