English silver verge watch with windmill automaton Circa 1831

Silver pair cased pocket watch with unusual windmill automaton
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An English silver pair cased verge with an unusual form of a windmill automaton, Hallmarked Birmingham 1831. Full plate fusee movement with round pillars, pierced and engraved round cock, blue steel regulator on top plate below the plain three-arm steel balance. Rare polychrome enamel dial depicting a church on the left indicating the time on a clock in the tower, Roman numerals, and gilt hands. On the right a windmill, the engraved gold sails rotating clockwise. Matching pair cases, silver oval pendant and bow. Maker’s mark J.W. in a rectangle.
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Diameter: 58 mm
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Depth: 14 mm
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Signed: No name
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An unusual layout for a windmill automaton requiring a movement with an offset canon pinion.