Extremely rare English gold lever watch with tourbillon Circa 1878

Gold open faced watch with relief rim
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An extremely rare English lever watch with later one-minute tourbillon, chain and fusee, key winding. , 30 hours power reserve and stoppable seconds, circa 1878.
Original white enamel dial with Roman hours, 30 hours power reserve indication, stoppable centre seconds and blued steel hands.,
An 18 carat gold pocket watch with tree gold lids, excellent engine-turned case with relief rim in very good condition.
Lateral button to stop the seconds, English hallmarks 1878, casemaker’s punch TR, case no.73113, matching numbers on movement and dial.
English precision movement with later 1-minute tourbillon, four screwed chatons, chain and fusee, key winding, very fine English quality.
Original dial with 30 hours power reserve indication, stoppable centre seconds, blued steel hands. Back cover opened by depressing the button in the gold pendant.
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Diameter: 55 mm
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Weight: 145 g
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Signed: No Name
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Dial with a very fine hairline.
Overall in excellent condition.
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Reference 0134000