Introduced in 1942, the Chronomat was the world’s first chronograph wristwatch to feature a slide rule. This model is based on a patent document that Breitling submitted, patent number 217012, which granted protection for a rotating bezel which consisted of a circular slide rule. With this ingenious system, the wearer could perform various calculations and measurements effortlessly.

The watch is fresh to the market, to our best knowledge. Considering its age, the present watch is preserved in excellent condition. The case number is crisp and clean on the caseback. Likely created in 1945 – the year which marks the end of the Second World War – this present lot is a significant memorabilia of history and Haute Horlogerie.