Fres Deroches, a gilt metal and enamel pair cased open face pocket watch, no. 405, circa 1790, verge fusee movement, pierced and engraved balance cock, polished steel endpiece, brass three armed undersprung balance, silvered regulator disc, cylindrical pillars, engraved Berthoud, a Geneve , white enamel dial, black Arabic numerals, gilt fancy hands, winding aperture at 2 o'clock, two piece hinged inner and outer cases, the inner case with foliate chased and paste set borders, the back cover with an oval enamel portrait of a lady, within a paste set border, the outer cover with a glazed back, inner case diameter 55mm, outer case diameter 61mm