156B

The Sinn 156B is a cult classic among German tool chronographs, originally developed in the late 1970s for military pilots and famously issued to the German Bundeswehr. Its distinctive tonneau-shaped 43mm case and utilitarian dial layout capture the no-nonsense ethos of Sinn’s professional lineup, while the model’s limited production run and military provenance drive collector demand.

Key references include the original 156B with the sought-after Lemania 5100 movement, prized for its central chronograph minutes hand and legendary durability. Later examples may feature subtle dial or logo changes, but the Lemania-powered versions consistently command higher prices due to their mechanical pedigree and the movement’s discontinuation. Condition and completeness—especially original bracelets and military markings—affect value considerably.

When considering a 156B, verify the presence and function of the Lemania 5100, as servicing this caliber can be challenging due to scarce parts. Water resistance was originally rated at 200m, but vintage examples may need gasket replacement. Collectors value unpolished cases and crisp bezel action, and full sets with box and papers remain rare finds for this iconic German pilot’s chronograph.