Sinn 103 B Auto Sa Wh Japan LimitedThe official name of the watchmaker Gin is Sinn Spezialuhren (Gin Special Watch Company). In 1961, Helmut Zinn, a pilot and flight instructor of the German military, started to make watches for pilots under his own name. He began making watches based on three principles: the best watches at the lowest cost, high quality with the best functionality and legibility, and offering value through direct marketing without extensive advertising. The brand has