An 18ct gold open face key-wind pocket...

An 18ct gold open face key-wind pocket watch by J. H. Allis, the white enamel dial with Roman numerals and subsidiary seconds, gilt jewelled lever movement with compensation balance, engraved balance cock with rose-cut diamond centre, dial signed J. H. Allis Small Street Bristol and numbered 1248, case with repeat number, case with London hallmarks, 1856, case dia. 49mm