Extremely rare 1950's Favre-Leuba three register Chronograph, S/S screw back case, measures 40 mm (excluding crown). Original silver dial, with applied radium lume dots, radium hands. Powered by a manual movement Valjoux 71, fully serviced. This rare Favre-Leuba is similar in design to some of the early Speedmasters, in fact, proportionately the case is near identical. In this example, the facets are strong and thick and the case appears unpolished.Extremely rare, only one other has been seen on the recent market for sale.