German 18k gold open faced lever pocket watch Circa 1883

Gold open faced lever by A. Lange & Söhne
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A Glashütte 18 carat gold open faced pocket watch, circa 1883. Lange & Söhne precision lever movement in top quality 1A with screwed gold chatons, diamond endstone, gold lever and gold escape wheel, manually engraved cock, very early version without fine adjusting device. White enamel dial with Roman numerals and blued steel hands. Plain case. Dial and movement signed, case and movement with matching number. Comes with an extract from the archives.
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Diameter: 49 mm
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Weight: 100 g
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Signed: A. Lange & Söhne Glashütte B/Dresden