Rare English 18K gold precision lever pocket watch Circa 1900

Gold open faced pocket watch
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A rare English precision pocket watch, circa 1900.
18 carat gold polished case with engraved coat of arms, push back and case maker’s punch mark “EN” (Emil Nielsen partner in Nicole, Nielsen & Co., entered 6 August 1878). Signed enamel dial with radial Arabic numerals, auxiliary seconds and blued spade hands. 4/5 plate movement, frosted, gilt, signed and numbered, with screwed chatons, English lever escapement, gold screw compensation balance, fine florally engraved balance cock and chatoned diamond endstone on balance.
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Diameter: 54 mm
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Weight: 138 g
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Signed: Dent 33 Cockspur Street, London