75. An 18K gold open face keyless wind chronograph pocket watch Chronographe de poche à cadran ouvert en or jaune 18K (750) remontoir au pendant Date: Circa 1900 Movement: Gilt full plate, Swiss lever, cut and compensated bi-metallic balance bridge, Cal. Nicolet, subtended counting minute, signed Stauffer & Co, No.261623 Dial: White, black Roman numeral hour markers, black outer minute track with 1/5th second divisions and Arabic 5 minute markers, subsidiary dials at 6 and 12 for running seconds and 60 minute countdown recording, blued steel spade hands, centre chronograph hand Case: Hinged round, 18K gold cuvette, chronograph button to pendant at 12, No.261623 Size: 50mm Weight: 120,32g