GRAHAM - George , London
1673: born
1688: apprenticed
1695: clockmakers company,
1711- partnership with Thomas Tompion
1751: died .
One of the most eminent English makers. Fellow of Royal Soc. and contributed many papers. Improved or perhaps invented
cylinder escapement. He used the verge up to 1726 and then mainly the cylinder.
Devised but did not use the gridiron pendulum in 1715. 
Devised the mercury compensation pendulum, described. in PhiL Trans. Vol. 34, 1726.
Was assistant to TOMPION from 1696, in partnership with him ca. 1711-13, succeeded him, and is buried with him in Westminster Abbey.
He nearly always repeated the watch No. on the pillar plate and beneath the cock
Approx. corresponding dates and Nos. are, for plain watches, 1715: No. 4660, 1715: No. 5260. 1735: No. 5610, 1745: No. 6180, 1750: No. 6480,
and, for repeater watches 1720: No. 480, 1730: No. 620, 1740: No.790, 1750: No. 960.
There are many contemporary forgeries. Many fine watches and bracket clocks. long case clocks are very rare.
Silver alarm watch, circa 1720, Silver-pair-cases. Silver champlevé dial, with alarm-setting dial above IV. Steel beetle and poker hands, minute hand cranked to clear alarm-setting square. Stop-lever for alarm on edge of case between II and III. The alarm is shown set for 10 o'clock. Dust-cap signed 'Geo.Graham, London Verge escapement. Diamond endstone. Table of cock decoration springing from female mask. Wide, solid foot to cock. Round pillars. Alarm bell seen in inner case. Casemaker W.S. signed: G. Graham, London, No. 5029 Note: Vuilliamy equation watch paper.