English massey type 4 lever with centre seconds Circa 1828

Massey type 4 lever with large seconds beating balance and centre seconds
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A rare English Massey type 4 lever watch with large seconds beating balance and centre seconds in associated silver pair cases, movement circa 1840, cases circa 1828, matt gilded full plate movement, Massey type IVlever escapement with type III roller, large escape wheel with vertical teeth, decoratively engraved balance cock, very large bimetallic seconds beating compensation balance, signed Edmd. Massey, Patentee, 89 Strand, London.
White enamel, Roman numerals, outer minute ring, silver spade hands, blued steel centre seconds, signed E. Massey, 89 Strand London.
Associated plain silver cases, the inner with winding aperture to back, Regency style pendant, both cases hallmarked Chester 1828 and with maker’s mark TE over HF for Timothy Ellison and Henry Fishwick, Liverpool.
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Diameter: 59 mm
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Signed: Edmd. Massey Patentee 89 Strand London

Edmund was the youngest son of Edward Massey and it was the latter who was in fact the patentee of this rare variant of Massey type IV escapement which was included in his 1814 patent (see Alan Treherne, The Borough Museum, Newcastle-under-Lyme, Exhibition Catalogue, 1977). For a similar watch signed by Edward Massey and numbered 653. Edmund Massey was active in London from 1839-1851.