32. Paul Ditisheim - Solvil. An 18K gold keyless wind open face chronograph pocket watch with pulsometre scale Paul Ditisheim - Solvil. Chronographe de poche à cadran ouvert en or jaune 18K (750) remontoir au pendant avec échelle pulsométrique Date: Circa 1920 Movement: Nickel full plate, Swiss lever, cut and compensated bi-metallic balance wheel, column wheel chronograph Dial: White, black Roman numeral hour markers, black outer minute track and 1/5th second divisions with Arabic 5 minutes markers, black outer pulsometre scale, subsidiary dials at 6 and 12 for seconds and 30 minute recording, blued steel spade hands, centre chronograph hand Case: Polished round, 18K gold cuvette, chonograph pusher button to pendant at 12, No.716281 Signed: Case, dial & movement Size: 52mm Weight: 100,33gr