Good example of a London finished movement with Massey type-1 escapement, circa 1820.
Fullplate fusee movement with nicely engraved cock, the 18-size frame stamped I.J and stamped 6351, the cap stamped LxR, as often seen on better finished movements of the period. Massey type-1 detached lever escapement with typically short straight sided lever, and appearing to be without draw - see my drawing of the escapement. Gold balance, spiral balance-spring. Good one-piece enamel of a less common design. 46.5 mm dimeter, 14 mm deep, not including centre arbor.
Thomas Hawley & Co, 75 Strand, London 'Goldsmiths & Jewellers to his Majesty,' retailers of fine quality clocks and watches.
Edward Massey, Newcastle, Coventry and Liverpool, escapement manufacturer and Patentee of the first extensively used detached lever escapements. Catalogued in recent times by Alan Treherne, the various types have come to be called from 1 to 5. Types I and 5 are the earliest and least common, followed by type 2 and then type 3, the last of which is the most common. Type 4 is a seconds beating-variant, usually fitted with a type 3 roller, and is very rare.
Dial with edge cracks, lacking hands and top balance pivot broken. Otherwise a good, complete and very nicely finished example.
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