Dent, London No.30636: A good 18ct. gold openface keyless split second chronograph pocketwatch in plain case, signed black dial with Arabic numerals and five minute divisions, subsidiary dials for running seconds and elapsed minutes, two sweep centre seconds operated by the crown and a button in the band, the signed frosted gilt ¾-plate movement with bimetallic balance, lever escapement, flat blued steel hairspring with endcurves, screwed chatons, under numbered hinged cuvette, with makers mark EN, hallmarked London 1889