Barraud, Cornhill, London. A silver key wind open face chronometer pocket watch London Hallmark for 1839Barraud, Cornhill, London. A silver key wind open face chronometer pocket watchDate: London Hallmark for 1839Movement: Gilt full plate, plain 3-arm balance, diamond end stone, No.5183Dial: White, black Roman numerals, black outer minute track, subsidiary seconds at 6, gilt Breguet style handsCase: Polished consular, No.5183 Signed: Dial & movement, case stamped CBH for Cornelius Brook HollidaySize: 51mmNone