Rare Swiss gold verge with visible balance and date Circa 1810

Gold open faced pocket watch 
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A very rare Swiss 18K gold verge pocket watch with date, circa 1810. Verge movement with a nicely engraved backplate, blue steel indicator and engraved regulator scale.
The face with a polychrome enamel scene, decentralized white enamel time indication at 6 o’clock with radial black Arabic hours, outer minute divisions, Arabic quarter-hour numerals and gilt hands, a visible balance with ruby endstone at 9. Plain case with a monogram on the bac, engraving on the side 20 novembre 1871. In all probability, somebody has given this pocket watch as a present on this special date.
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Diameter: 52 mm
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Weight: 96 g
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Signed: No name
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This kind of watch is hard to find in gold, very rare.
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Reference 025000