English open faced lever with stop/start seconds Circa 1900

An English 18 carat gold keyless wind open faced pocket watch with stop/start seconds, Chester hallmark for 1900. Gilt 3/4 plate English lever movement, cut and compensated bimetallic balance. White enamel dial, black Roman numerals, black outer minute and 1/5th second divisions with Arabic numeral 5 minute markers, blued steel spade hands and centre seconds. Polished hinged case, foliate engraved band. Case, dial and movement signed.
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Diameter: 57 mm
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Signed: Thomas Russell & Son 12 Church Street Liverpool