Austrian enamelled rock crystal Wiener Ei watch Circa 1820

Silver and rock crystal egg-form watch
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An absolutely rare Austrian enamelled silver and rock crystal verge Wiener Ei pocket watch, circa 1820.
Rock crystal egg-shaped case with cut stars, silver mounting, engraved band, multi-coloured enamel decoration on the inside, hinged. Polychrome enamel decorated matching dial with Roman hours and blued steel Breguet hands. Gilt verge movement.
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Dimensions: 65 x 38 mm
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Signed: No name
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The Vienna Egg is one of the rarest Vienna rock crystal form watches. Only one other comparable piece is known.