Rare centre-seconds movement with Patent Up/Down indicator, circa 1900.
Large three-quarter plate centre seconds, keyless (openface set) movement, jewelled to the 3rd (centre), with cap jewels on balance, lever and escape. Single-roller detached lever escapement. Compensation balance, balance-spring with overcoil. Almost perfect signed enamel dial. 49.5 mm diameter, 10 mm deep, not including centre arbor.
Thomas Russell & Son, one of the largest and most famous Liverpool watchmakers of the period, and the only manufacturers of watches with S J Morgan’s patents.
S J Morgan, PATENT No 20,134, October 1899. Winding indication for going barrel watches (much harder to achieve than with a fusee) incorporating differential gearing using a tangential pinion running within a slot in the pillar plate. NB. Russell produced two forms of this Patent, this being an example of their better quality differential gearing.
Lacking hands and the lovely dial with just a few minor blemishes at the edge, which would not be visible under a bezel. Otherwise complete and will tick if wound.
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