51. J.W. Benson, London. A silver keyless wind open face chronograph pocket watch J.W. Benson, London. Chronographe de poche à cadran ouvert en argent (800) remontoir au pendant Date: Circa 1890 Movement: Gilt full plate, Swiss lever, cut and compensated bi-metallic balance wheel Dial: White, signed Case: Polished hinged round, No.132607 Signed: Dial Size: 52mm Weight: 108,98g