English gold precision watch with regulator dial Circa 1826

Gold precision watch with regulator dial
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An English rare small and interesting gold precision watch with regulator dial, circa 1826, gilt full plate movement, lever escapement similar to Massey’s type-IV,  two-arm bimetallic compensation balance, helical balance spring, engraved beat scale, fusee and chain, gold engine turned regulator-type dial, satin-finished chapter rings, hours dial at 6 with Roman numerals, subsidiary seconds at 12 and outermost minute track with Arabic numerals, blued steel hands, gold case with engine turned band and case back, with casemaker’s mark ED for Edward Delgrave
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Diameter: 52 mm
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Signed: T. Cummins London
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Thomas Cummins was a little-known maker. He is recorded as a member of the Clockmakers’ Company from 1806-1820, with pieces finished between 1825-1827. Cummins had a small output of high-quality watches. Currently, less than a half dozen pieces are known.  Clutton and Daniels, Watches notes that Cummins was the first English Maker of the second generation who regarded the lever watch as a precision instrument. Cummins’ lever escapements employed a refined version of Massey’s type IV lever. The present example appears to be the only known Cummins watch to include resilient banking work. Of further note is the somewhat diminutive size of the present lot, measuring 52mm, it is considered the smallest watch known by this maker. 

Cummins used a double numbering system for his watches, the first part is the series number of the watch, and the second is for the date of completion.
More about Thomas Cummins see Camerer Cuss, The English Watch.