7. Dueber. A 14K gold keyless wind open face chronograph pocket watch Dueber. Chronographe de poche à cadran ouvert en or jaune 14K (585) remontoir au pendant Date: Circa 1910 Movement: Nickel full plate, Swiss lever, cut and compensated bi-metallic balance wheel, column wheel chronograph, Patent No.5617 Dial: White, black Roman numeral hour markers, black outer minute track and 1/5th second divisions with red Arabic 5 minute markers, subsidiary dials at 6 and 12 for seconds and 30 minute recording, blued steel spade hands, centre chronograph hand Case: Polished round, textured back with cartouche and monogram, chronograph button to pendant at 12, No.2863164 Signed: Case and movement Size: 52mm Weight: 100,51gr