50. A.Lecoultre, Genève. An 18K gold open face keyless wind split second chronograph pocket watch A.Lecoultre, Genève. Chronographe de poche à cadran ouvert en or jaune 18K (750) avec fonction rattrapante et remontoir au pendant Date: Circa 1900 Movement: Nickel full plate, Swiss lever, cut and compensated bi-metallic balance wheel Dial: White, black Arabic numerals, black outer minute track and second divisions, subsidiary dials at 6 for running seconds, blued steel spade hands, chronograph hands to centre Case: Polished round, 18K gold cuvette, chronograph button to pendant at 12, split second button to band at 11 Signed: Dial Size: 53mm Weight: 129,16g