Swiss silver cylinder watch glazed on both sides Circa 1885

Silver open faced cylinder watch
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A silver pocket watch with hands moved by rotating glass discs, circa 1885.
A silver decorated case, glazed on both sides, rotating glass discs with applied spade hands, radial Roman numerals, crescent shaped movement, cylinder escapement, ring balance.
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Diameter: 54 mm
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Weight: 87 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. It is also unusual bearing a name that may be for its Spanish market retailer or, perhaps, that of its original owner – the enamelling is beautifully done.