Helmut Sinn is a former airplane pilot and watch manufacturer. He was was born 1916 in Metz, Lorraine on 3 September. The former pilot, flight instructor and rally driver founded the company Sinn Spezialuhren GmbH & Co. KG 1956 in Frankfurt am Main. Especially pilot's watch were produced.
After he had led this enterprise to success, through the novel concept of watches direct sales, with good production quality and competitive prices, he sold it in September 1994 to the former IWC-staff and engineer Lothar Schmidt. He later, at the age of more than 80 years, took over the rights of the watch manufacturer Guinand and launched the brands Chronosport, Guinand and the pocket watch brand Jubilar (jubilee).