Important Modern & Vintage Timepieces

Geneva, May 12, 2013

LOT 347

DITISHEIM PLATINUM DOCTOR?S CHRONOGRAPH DRESS WATCH ? BLUE BREGUET NUMERALS Paul Ditisheim, (La-Chaux-de-Fonds), No. 13505. Made circa 1920. Fine and rare, platinum keyless dress watch with chronograph, medical pulsometer graduated for 30 pulsations and 30-minute register.

C. Three-body, bassine, polished, the hinged back cover with engraved foliate monogram, semi-concealed hinge, co-axial button in the crown for start/stop and return-to-zero functions of the chronograph. D. Brushed silver with blue champlevé Breguet numerals, outer minute track and concentric fifths of a second divisions with Arabic five-second numerals, outer pulsometer scale graduated for 30 pulsations, subsidiary dials for the seconds and 30-minute registers, inscribed above the seconds dial ?Carlos U. Perret Rosarro?. Blued steel Breguet hands. M. 18???, rhodium plated, fausses cotes decoration, 21 jewels, straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, swan-neck micrometer regulator. Dial signed. DIAM. 45.5 mm.