English silver vermeil and rock crystal octagonal watch Circa 1650

Silver and rock crystal verge watch by John Brooke
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An English silver vermeil and rock crystal octagonal verge pendant watch from the 17th century. This watch features a verge escapement. Its annular dial, set against an engraved foliage background topped with a winged angel head, displays hours in Roman numerals and has a single blued steel hand. The case is made of silver vermeil and rock crystal, with a hinged bezel decorated with stylised dolphins. The reverse side is engraved and signed John Brooke, London.
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Height: 78 mm
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Weight: 92,3 g
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Signed: John Brooke London
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Vermeil is a term used for jewellery made with a base of sterling silver (925 silver) covered with a thick layer of gold. To be considered vermeil, the gold layer must be at least 2.5 microns thick and made of at least 10 carat gold.