Description: Gilt brass, full plate, pocket chronometer movement, engraved cock and slide plate. detached lever escapement, brass escape. Earnshaw compensation balance with two wedged weights cut from wide brass ring. Flat, blued spiral balance-spring. Original unsigned enamel copper dial, counter enamel marked in red ‘MOM’. Original blued steel hands, lacking seconds hand. Originally in a 18k gold case hallmarked for London 1808 unfortunately scrapped by a former owner.
Additional Info:
Richard Jolly has worked at the Arnold factory ‘Martins’ at Chigwell along with Thomas Prest and John Glover. He is recorded as apprentice of John Roger Arnold from the 2.11.1802 on. It might be surprising that he preferred the system developed by Thomas Earnshaw, a great concurrence of Arnold. On the other side, even chronometers by John Roger Arnold’s have movements with Earnshaw elements. Finally the Earnshaw system proved to be easier to construct and to service. This is the only movement signed by Richard Jolly known to us.
Antiquarian Horology 
