12. J. Hepburn, Newcastle. An 18K gold open face key wind split second chronograph pocket watch J. Hepburn, Newcastle. Chronographe de poche à cadran ouvert en or jaune 18K (750) avec fonction rattrapante remontoir au pendant Date: Circa 1875 Movement: Gilt full plate, English lever, cut and compensated bi-metallic balance wheel Dial: White, black Roman numerals, black outer minute track, blued steel spade hands, centre chronograph hands Case: Polished round, 18K gold cuvette, chronograph button to pendant Signed: Movement, cuvette Size: 50mm Weight: 107,64g