circa 1850, the unsigned white dial, 35mm diameter, with black Roman numerals, copper coloured spade hands and dot minute track, front loading gilt three-quarter plate movement signed T COX SAVORY & CO 47 CORNHILL LONDON NO13316, case, 40mm diameter, front cover hinged at 9 o'clock, outer with engine turned engraving around a circular monogrammed cartouche, interior part marked for 18ct gold, numbered 13316, verso hinged at 7 o'clock, outer with engine turned engraving, interior with London hallmarks for 18ct gold, numbered 13316, 60.4g gross and presented with the winding key