Early 20th century Synchronome master clock and ‘slave’ dial – £10,500 at Gardiner Houlgate.
The complex precision electromechanical pendulum clocks made by William Hamilton-Shortt, engineer for the London & South Western Railway, and Frank Hope Jones, horologist of the Synchronome Company, were the most accurate pendulum clocks ever commercially produced.
Correct to within a second a year, Shortt Synchronome clocks became the highest standard for inter-war timekeeping until the arrival of quartz.