52. Mensor. A very interesting double open faced 18K gold keyless wind pocket watch Mensor. Très intéressant chronographe de poche double face en or jaune 18K (750) remontoir au pendant Date: Circa 1900 Movement: Nickel full plate, Swiss lever, cut and compensated bi-metallic balance wheel Dial: Both white, black Arabic numerals, black outer minute track, black outer 1/5th second divisions, subsidiary dials at 12 and 6 for running seconds and 30 minute recording, gilt spade hands, centre chronograph hand - to back, 4 different coloured scales Case: Polished round, chronograph button to pendant Signed: Dial Size: 52mm Weight: 114,99g