Lever movement with CLASS A Kew certification, 75.3 MARKS, circa 1900.
Three-quarter plate keyless going-barrel movement (hunter set) jewelled to the 3rd, with cap jewels on balance (diamond) lever and escape arbors.Single-roller detached lever escapement, the gold safety. Compensation balance, balance-spring with overcoil. Fine enamel dial in perfect condition, signed WILLIS on the rear, original blued-steel hands. 43 mm diameter, 9.5 mm deep, not including centre arbor.
Pierre and Auguste Guye ‘Chronometer & Watch Manufacturers,’ the first firm in Britain to manufacture watches throughout on the interchangeable system and pioneers in the design and manufacture of machine-made watches, suppliers of many movements to J W Benson and other good retailers.
The testing of watches was carried out at Greenwich and later at Kew Observatory, where testing began in 1884. There were three classes of certificate: A, B and C, the top category being Class A. The test for a watch entered in Class A took 45 days, during which the watch was tested in five different positions and at three different temperatures. NB: Watches entered for Class A usually involved the higher grade of hand finished and free-sprung movements, but this example is interesting in that it does not follow that route, being of 'machine' manufacture.
Broken top pivot and some scratches on the top plate. Not working.
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