Thomas Reid, Edinburgh. An interesting, rare and large silver key wind pair case pocket watch London Hallmark for 1804Offered from the T P Camerer Cuss CollectionThomas Reid, Edinburgh. An interesting, rare and large silver key wind pair case pocket watchDate: London Hallmark for 1804Movement: Gilt full plate duplex with ruby roller, finely engraved balance cock, 4-arm steel balance with 4 quarter screws, diamond end stone, lever protruding through bezel at 8 operates via a steel arbor a long brass whip mounted on the back plate for start/stop function, round baluster pillars, No.1029Dial: White, black Roman numerals, black outer minute track with 10 minute markers, subsidiary seconds at 6, gold spade handsCase: Polished inner and outer cases, D shaped bowSigned: MovementSize: 68mmThis is a particularly interesting timepiece featuring a ruby roller. By using a ruby, less friction is produced and is unusual in both its inclusion in the movement and also for the fact that it has survived. Thomas Reid is recorded as working in Edinburgh from 1781 when he succeeded his cousin James Cowan. In 1806 he partnered with William Auld as Reid & Auld making the current lot, hallmarked for 1804, one of his later pieces produced independently before the merger of the two makers. Provenance:Purchased from Grainger December 1962T P Camerer Cuss CollectionIllustrated:The Country Life Book of Watches, T P Camerer Cuss, Country Life, 1967, plate 85The Camerer Cuss Book of Antiques Watches, T P & T A Camerer Cuss, AC C 1976, plate 99