English silver pair cased verge watch with alarm Circa 1700

One handed open faced watch
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A very fine rare one handed pair cased verge pocket watch with alarm, circa 1700.
Silver case, smooth, a goutte, lateral hinge, florally hand engraved and pierced with silver Champleve dial, radial Arabic numerals, central turnable alarm disc, blued steel hand.
Full plate movement, keywind, applied engraved florally pierced decorations, firegilt, signed, blued screws, chain, pierced barrel for alarm train, tulip pillars, 1 hammer, verge escapement, three arm steel balance, florally engraved pierced balance cock
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Diameter: 57 mm
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Weight: 181 g
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Signed: Joseph Windmills London