Ultra thin Swiss gold open faced pocket watch Circa 1850

Gold cylinder with matching tortoiseshell box and original key
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A gentleman’s elegant and ultra thin pocket watch with cylinder escapement, circa 1850.
Present from King Otto I. to Imperial-Royal postmaster Karl Bauer, Carlsbad August 10th, 1856 – with matching tortoiseshell box and original key.
An 18 Carat gold, lavishly engraved case, silvered dial, engine turned and florally engraved, “Lepine” calibre, bridge movement, three arm brass balance.
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Diameter: 42 mm
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Weight: 31 g
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Signed:  Henggeller, Roy & Cie.  Chaux de Fonds
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Dial is slightly scratched, slightly oxidized
Very good movement, capable of running, cleaning recommended