86. J.B Doyen, Belfort. A silver keyless wind open face chronograph pocket watch J.B Doyen, Belfort. Chronographe de poche à cadran ouvert en argent (800) remontoir au pendant Date: Circa 1900 Movement: Swiss lever, cut and compensated bi-metallic balance Dial: White, signed Case: Round, No.57538 Signed: Dial Size: 46mm Weight: 105,50g