Swiss gold cylinder watch glazed on both sides Circa 1888

Gold open faced cylinder watch
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A rare and almost as new gold pocket watch with hands moved by rotating glass discs. Only a few watches of this type were produced in gold, circa 1888.
An 18k gold case, glazed on both sides, very finely engraved with foliage decor, rotating glass discs with applied spade hands, Roman numerals, crescent shaped movement, cylinder escapement, ring balance.
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Diameter: 54 mm
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Weight: 111 g
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Signed:  Armand Schwob & Frère    La Chaux de Fonds
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Armand Schwob & Frère , La Chaux-de-Fonds, Switzerland, watch manufacturers. Holders of two Swiss Patents, 2445 and 2526, in 1881, and English Patent No 9865 granted in July 1888: Transparent Watches. Examples are usually found in silver cases and occasionally in silver-gilt. Only a few watches of this type were produced in gold. Since the creation of our auction house we have only been able to present two other such examples.