Rare movement with 'Morton's Patent' escapement, circa 1865.

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Three-quarter plate keywound fusee movement. Morton's Patent detached escapement, the steel roller with standard upright unlocking jewel but also with a radial jewel for impulse, the escape wheel with chronometer style teeth, as shown in the Patent, and with unusual Massey-type safety action. Compensation balance, spiral balance spring. Enamel dial numbered and with CHRONOMETER, blued-steel hands. Now re-cased in a near contemporary silver case hallmarked 1873. 48.5 mm diameter

George Morton, Market Place, Keighley, Yorkshire, Patent No 2432, October 1857, a Robin-type detached escapement with chronometer style single impulse. As subsequent development took place the watches are variously engraved, if at all: Morton's Patent; Morton's Patent Improved; Patent Chronometer; London Patent Chronometer; and finally Patent Union Chronometer. All are numbered within the same sequence, the last known number being just over 3000.

NB: Safety action at this period of Morton's Patent watches is sometimes provided by a Massey-type fork to the lever acting with the balance arbor. This is cut to allow free passage of the lever at the appropriate point - an interesting and, I believe, unique method.

Dial with faint edge cracks, otherwise in good original condition. Serviced by its previous owner and appears to be working properly - it can be freshly serviced if wanted, likely cost around £150