105. J W Benson. A good quality keyless wind single button open face chronograph pocket watch in associated white metal case J W Benson. Chronographe de poche à cadran ouvert en métal remontoir au pendant Date: Circa 1890 and later Movement: Gilt 3/4 plate English lever, cut and compensated bi-metallic free sprung balance, blued steel breguet overcoil, diamond end stone No.2492 Dial: White enamel, black Roman numerals, black outer minute divisions, subsidiary dials for constat seconds and 60 minute recording, blued steel spade hands, centre chronograph hand Case: Polished hinged back and cuvette, No.68569 Size: 57mm