German plain silver pare cased verge pocket watch Circa 1720

Silver open faced pocket watch 
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A rare pair cased verge pocket watch, circa 1720.
The outer case, bronze, silver, lacquer. The inner case is silver. A silver champlevé dial, the centre of the dial is decorated with a relief cartouche showing two female figures; one of them holds a candle in her hand, the other a sword. Together they are raising a royal crown above the letter G. Full plate movement, chain/fusee, large three-arm iron balance.
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Diameter: 61 mm
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Weight: 149 g
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Signed:  Rugendas   Augsburg
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The watch was possibly made by watch and compass maker Nicolaus III. Rugendas (1665-1745), of the famous Rugendas family in Augsburg.