Thomas Earnshaw, London
AN EXCEPTIONALLY FINE GOLD PAIR CASED POCKET CHRONOMETER 1801, NO. 626/3069
• Movement: gilded full plate, spring detent escapement, decoratively engraved balance cock, two-arm bi-metallic balance with wedge shaped weights, limiting bars and timing screws, blued steel helical spring, diamond endstone, cylindrical pillars, fusee and chain, signed and numbered Thos. Earnshaw Invt. et Fecit, London, No. 626/3069
• Dial: white enamel, Roman numerals, outer minute ring, subsidiary seconds, gold hands, signed and numbered Thomas Earnshaw, Invt et Fecit, No. 626
• Cases: plain gold inner and outer cases, long pendant and D-shaped bow, both cases hallmarked London 1801 and with maker's mark TC with axe above incuse for Thomas Carpenter
diameter of outer case 59.5mm, inner case 52.5mm
An extremely handsome pocket chronometer, this is a classic Earnshaw that illustrates the excellent quality and finish the maker lavished on his finest watches. The movement of the present watch, no. 626/3069, with the exception of its finish, is to the same specification as Earnshaw no. 487/2828, see: Sotheby’s, Celebration of the English Watch Part II
July 2016, lot 48. Both 487/2828 and the present watch have the same dial and hands and the cases are by the same makers, the difference being that 487/2828 is screwed into the inner case, whereas the movement of the present lot is hinged to the inner and thus can be 'swung' out.
For a note on Thomas Earnshaw and his spring detent escapement, see lot 50.
Terence Camerer Cuss, The English Watch 1585-1970, 2009, p. 325, pl. 205
T.P. & T.A. Camerer Cuss, The Camerer Cuss Book of Antique Watches, 1976, p. 164, pl. 96
T.P. Camerer Cuss, The Country Life Book of Watches, 1967, p. 70, pl. 80
Anthony G. Randall, The Time Museum Catalogue of Chronometers, 1991, p. 146