Swiss gold, enamel, pearl and diamond set pocket watch Circa 1800

Gold watch with duplex escapement
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An excellent Swiss 18 carat gold and enamel, pearl and diamond set pocket watch, circa 1800. Attributed to William Anthony and retailed by Just and Lane. The case is stamped with a mastermark GB, back decorated with translucent Imperial blue enamel over elaborate engine turning with rose cut diamond set applied rosette and large diamonds in the centre, azure enamel frame with red enamel, pearl set bezels and pendant. Hinged gold cuvette fixed to the movement ring. White enamel dial, radial Roman numerals, outer minute divisions and gold hands. Gilt brass, fully chased movement with scrolling foliage decoration, Chinese calibre drawn from that of Lepine with free standing barrel, duplex escapement, plain flat five arm polished steel balance with flat balance spring and diamond endstone. Signed on the movement by Just and Lane.
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Diameter: 56 mm
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Signed: No Name
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The work of William Anthony is characterised by its high quality. He produced one day and eight day movements; other oval watches were made with articulated and expendable hands (fewer than 12 pieces known).