English silver watch with pivoted detent escapement Circa 1860

Silver open faced pocket watch 
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A very fine and large pocket watch chronometer with spherical hairspring, signed by Girard & Comp. London, circa 1860. Very fine silver case with pink gold hinges, 900 silver, glazed movement, very unusual English chronometer movement, cage in the shape of snake, fine bar movement with chain and fusee, pivoted chronometer escapement, very rare spherical hairspring and diamond endstone, signed Girard & Comp. London, original, signed enamel dial, rare and very fine pink gold hands, very nice condition of preservation, in working order, probably matched silver key, with gemstone.
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Diameter: 62  mm
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Weight: 165 g
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Signed:  Girard & Comp.   London
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Girard & Cie was headquartered in Switzerland. They started the business in London in 1860 under the name Girard & Comp., mainly for exporting watches to South America.