Large English Oignon verge watch in repoussé case Circa 1750

Verge watch for the Dutch market 
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A rare, large Oignon with repoussé case and enamel painting, John Wilter London for the Dutch market, circa 1750. A pair-case, rare and splendid relief case, back with enamel cartouche in very beautiful unrestored original condition, very high quality case with 5-piece lateral hinge, plain inner case, early English verge movement, worm gear, main plate in Dutch design, with rich decorations and oval engraving cartouche, signed Wilter London, enamel dial in Dutch design in very beautiful condition, gilt hands, corresponding steel key, in working order, overall in very beautiful condition, very rare with enamelled case.
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Diameter: 57 mm
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Weight: 134 g
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Signed: John Wilter  London