English 18k gold chronometer pocket watch Circa 1874

Gold open faced pocket watch by E. Gompers
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A solid pocket chronometer with rare English pivoted detent chronometer escapement, circa 1874.
Polished 18-carat gold case with case maker’s punch mark JR. Signed white enamel dial with radial Roman numerals, outer minutes, subsidiary dial for the seconds, and gold spade hands. And signed full plate movement, keywind, chain/fusee, gold screw chronometer balance, free-sprung blued helical balance spring.
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Diameter: 50 mm
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Weight: 135 g
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Signed: E. Gompers, Threadneedle Street, London, Chronometer