Estimate 3,500 - 6,000 €
Price Realised 4,000 €
a lot of the last auction!
18 K gold, push back, bidirectional rotating bezel with slide rule function.
very good, slightly worn.
Black, red telemeter scale, "Patent 217012".
very good, slightly oxydized.
very good, capable of running, cleaning recommended.
The patent number 217012 on the dial refers to the slide rule patented in 1942. It was used as a tachometer and pulsometer and enabled elementary operations such as multiplication and division to be calculated. The Chronomat is considered the forerunner of the Navitimer, but it is not a pilot's chronograph. Rather, the earlier model was marketed as the ideal timepiece for engineers, doctors, athletes, aviators and technicians.