English silver pair cased watch with champlevé dial Circa 1700

Pair cased verge pocket watch by Jacob Massy
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An attractive, early silver London repeating pocket watch with striking movement, circa 1700. (Recorded 1689-1725).
Very early English movement, vase pillars, verge escapement, repeater, signed and numbered plate, bell. Signed silver champlevé dial with Roman radial hours, outer minutes track with Arabic five minutes numerals, hour hand probably original, minute hand replaced, and glass not original. Silver pair-cases: exceptionally well preserved pierced outer case, richly decorated, fantastic quality; and the inner case also pierced, tendrils, mythical creatures and animals, as well as a grotesque face. Signed original silver dust cover.
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Diameter: 56.5 mm
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Weight: 165 g
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Signed: Jacob Massy London
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The movement starts ticking but needs cleaning; the striking mechanism needs overhauling (currently not striking completely). Although the watch needs a technical overhaul, visually, it is in extremely rare condition for an early pocket watch, ca. 1700.
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Jacob Massy, English watchmaker
Jacob Massy was possibly born in Blois. He was the son of Nicholas Massy III. Around 1681 the family moved to London as Huguenot refugees. Grandfather Nicholas Massy II, his brother Edmund Massy and Uncle Henry Massy had also fled to London. In 1689 he was mentioned as a clockmaker in Cranbourn Street, Leicester Fields (now Leicester Square). His father also worked here. Jacob became a member of the Clockmakers Company in 1715. He was active until around 1733.