Austrian astronomic watch with 3 complications Circa 1790

Rare silver open faced collector’s pocket watch
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An unique, astronomic verge watch with 3 complications and rare movement decoration, probably from Austria, circa 1790.
Silver case, glazed movement. Uniquely decorated, skeletonized verge movement, partly fire-gilt, partly silver, balance bridge with Austrian coat of arms ca. 1800, peripheral monogram JK, verge escapement. White enamel dial with decentralized time indication, very rare astronomic complications, moon and moon age, day and night indication, additional seconds indication and golden hands.
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Diameter: 57 mm
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Weight: 123 g
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Signed: No name