Swiss gilt brass scallop shell form pendant watch Circa 1880

Gilt brass and rock crystal single handed verge 
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An interesting Swiss gilt brass, rock crystal single hand form watch designed as a scallop shell, circa 1880. A scallop shell shaped case, gilt brass mounted, rock crystal panels. Silver dial, radial Roman chapter ring on gilt brass engraved scallop shell shaped plate and blued steel hand. Gilt brass, shaped movement, verge escapement, brass circular foliate cock.
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Dimensions: 51 x 33 mm
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Signed: No Name