142

The Sinn 142 holds a unique place in chronograph history, famously worn by German astronaut Reinhard Furrer during the D-1 Spacelab mission in 1985. This connection to spaceflight, paired with Sinn’s reputation for tool watches, makes the 142 particularly appealing to those seeking a blend of heritage and functionality in a 40mm case. Its integrated bracelet and tonneau shape set it apart visually from other German chronographs of the era.

Key reference numbers include the 142 and 142 St, with early models powered by the automatic Lemania 5100 caliber—valued for its central minute counter and rugged reliability. Later versions switched to Valjoux-based movements; the Lemania-equipped examples command a premium due to their direct link to the original space-flown watches and the now-discontinued movement. Water resistance is rated at 100 meters, making it versatile for daily wear.

Condition and originality drive price variation: unpolished cases, original matte dials, and correct hands are especially sought after. The Lemania 5100’s distinctive hand layout is a quick visual cue for collectors. While the 142 is less frequently counterfeited than Swiss icons, parts swapping between Lemania and Valjoux models can occur, so verify the movement and dial are correct for the reference and production year.