Early German 18K gold watch 1a grade movement Circa 1865

Gold open faced watch with 1a grade movement
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An early German gold open faced watch with 1a grade movement, circa 1865, gilt 3/4 plate movement 1a quality, jeweled with some set in chatons, diamond endstone, gold escape wheel and pallet.
White enamel dial, Roman numerals, subsidiary seconds, 18k gold case, reeded bezels, engine turned case back, gold cuvette, dial and movement signed, case with maker’s mark H.W.S.
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Diameter: 57 mm
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Signed: A. Lange