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Sinn
Wristwatch company
Sinn is a German manufacturer of mechanical and quartz wristwatches based in Frankfurt am Main. The company was founded in 1961 by flight instructor and pilot Helmut Sinn under the name ‘Helmut Sinn Spezialuhren’.
Wikipedia
Founder
:
Helmut Sinn
Founded
:
1961
Headquarters
:
Frankfurt am Main
,
Germany