German gold verge watch with 8 day going train Circa 1790

Extremely rare gold verge watch
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A fine, extremely rare German verge pocket watch with eight-day going train, circa 1790.
18K rose gold case, smooth, engraved band. Enamel dial, Roman radial hours, double serpentine hands. Full plate movement, keywind, frosted, gilt, signed, chain/fusee, blued screws, two teethed barrels in a tandem arrangement for drive train on fusee via diagonal chain guiding device, three-arm brass balance, blued balance spring, fine florally engraved and pierced balance bridge, large silver regulator disc.
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Diameter: 55 mm
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Weight: 112 g
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Signed: H. & G. Soulzberguer à Constance