Swiss unusual rare pocket watch without hands Circa 1850

Rare brass open faced pocket watch
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An unusual, Swiss pocket watch without hands and with back winding, circa 1850.
Brass case with backwinding. Enamel rotating dial with Roman numerals, time display at 12. Full plate movement, cylinder escapement.
Similar to the Mysterieuse watches, this timepiece displays the time as well as the movement through the revolving dial.
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Diameter: 56 mm
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Weight: 174 g
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Signed: No name