Fine Dutch silver keywind pair cased verge watch Circa 1720

Silver open faced pocket watch
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A very fine Dutch silver pair cased verge pocket watch, circa 1720. Polished Silver pair cases. Full plate fire gilt movement with beautiful decorative pillars, florally engraved, pierced balance cock, Fusee and chain with worm and wheel barrel set-up between the plates. Movement signed D.K. Koster Amsterdam.
White enamel dial, Roman numerals, Arabic outer minute ring. blued steel hands. Winding through the back.
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Diameter: 59 mm
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Weight: 171 g
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Signed: D.K. Koster Amsterdam
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Dirk Koster often used the initials DK and had his workplace in the Vijzelstraat in Amsterdam.
He worked here around 1700-1740.
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Some not disturbing small dents.
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Reference 042000