Rare Swiss ebony and ivory keyless lever pocket watch Circa 1890

Unsigned pocket watch of ebony and ivory
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A rare Swiss open faced keyless lever pocket watch crafted from a combination of wood and ivory, circa 1890. This watch features an unsigned movement with ebony bridges, an ivory wheel train, a steel lever and escape wheel, an ebony and ivory balance with ivory screws, and an ivory regulation index. It has an ebony dial adorned with applied ivory Roman numerals, an ivory filigree hour hand (lacking a minute hand), and an outer ivory pearled minute ring. The ebony case displays an applied ivory monogram on the back, along with an ivory winder and bow, and it boasts a hinged back.
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Diameter: 54 mm
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Weight: 30 g
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Signed: No name
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Movement not functional. The ivory arm for the ratchet above the winding barrel is cracked and glued. The dial is generally in good condition but has several verdigris marked pins. The case bezel at the front is broken and detached, while the case back is fine.