Early silver English pocket watch with alarm on bell Circa 1790

Pocket watch with beautifully pierced case
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An early silver pocket watch with alarm on bell, made by S & C Jorce in London, England, circa 1790. The open faced case of this watch is crafted from silver, is beautifully pierced, has a bell but the protective case is missing. The white enamel dial has black Arabic fifteen minutes- and hour numerals, the original gold hour hands and a, later added, minute hand. The extremely unusual numbered caliber of very fine English quality with diamond end stone has a verge escapement and a ring shaped index hand.
The movement is signed.
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Diameter: 48,5 mm
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Weight: 111 g
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Signed: S&C Jorce, Lombard Street London