Three-quarter plate keyless movement (openface set) jewelled to the 3rd, with cap jewels on balance (diamond), lever and escape, the chronograph work mounted under the dial. Inverted double-roller detached lever escapement with ‘tuning-fork’ style of lever, often associated with the best English work. Best quality compensation balance with quarter-timing nuts, free-sprung balance-spring with overcoil. Snap-on enamel dial in prefect condition, blued-steel hands. 46.5 mm diameter, 10 mm deep, not including centre arbor.
Louis Allamand (previously Allamand Brothers), at one time working in Spencer St, Clerkenwell, the heart of London’s watchmaking district, known to have sold high quality English work.
NB: This is a ‘single’ chronograph, with start, stop and return-to-zero function for a centre-seconds hand without a minute counter. The offset seconds is unaffected.
Lacking the chronograph centre-seconds hand and a broken balance pivot, otherwise in good complete and original condition apart from the top plate having been over-chalked and now lacking much of its gilding – priced accordingly. Chronograph operating properly via its castle wheel, the time train not working.