A black metal keyless wind open face chronograph pocket watch Chronographe de poche à cadran ouvert en métal noirci remontoir au pendant Date: Circa 1920 Movement: Swiss lever, cut and compensated bi-metallic balance, column wheel chronograph Dial: White Case: Round, No.89654 Size: 50mm For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing