77. A silver keyless wind open face chronograph pocket watch with reverse 30-minute counter Chronographe de poche à cadran ouvert en argent (800) avec compt de minutes inversé remontoir au pendant Date: Birmingham hallmark for 1891 Movement: Gilt full plate, English lever, bi-metallic cut and compensated balance wheel, No.0140647 Dial: White, signed 'Chrono-Micrometer F.P.' Case: Hinged round, No.0140647 Signed: Dial Size: 52mm Weight: 131,74g