Verge escapement watch movement with later enamel dial by John Shaw. One half of the balance-cock table is engraved ‘To Increase the figure will make it goe faster & to Decrease it slower’. The other half of the table is cut away to reveal the balance-spring with a regulating device for adjusting the length of the balance-spring. Beneath this is engraved 'Slower, Faster' and a scale of I-V in an arc. The backplate is signed ‘John Shaw, Holborn, 546’. London c.1690.
Shaw became a Freeman of the Worshipful Company of Clockmakers in 1682, and its Master in 1712.
Clockmakers' Museum No. 1210.