Swiss large 18 carat gold skeletonized cylinder watch Circa 1820

Gold quarter repeater
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An exceptionally large skeletonized cylinder pocket watch with striking mechanism made in Switzerland, circa 1820. The numbered open faced case of this watch was crafted from 18 carat gold and has a back lid with a curious engraved representation of a table with a globe, scientific instruments and a ‘lost head’. The watch is double glazed on the face, providing a view to the striking train, has a white enamel chapter ring with Arabic hour numerals, an outer minute track and blued steel arrow hands. The technically highly interesting skeletonized movement has a cylinder escapement and repeats the quarter hours.
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Diameter: 62 mm
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Weight: 106 g
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Signed: No name
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The timepiece presented here is extremely rare in this large size and design.
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The movement glazing is missing.