Rare 8-day box chronometer by the finest firm of their day, circa 1918.
Nicely figured 3-piece brass-bound mahogany box, with fully signed brass plaque. Typical top quality reverse-fusee double-frame movement retaining much of its original spotting, both movement and bowl bearing Kullberg's number 9262. Earnshaw type spring-detent escapement of Kullberg's 'reversed detent' form with beautifully polished detent - see pic. 10-turn Palladium helical balance-spring with Kullberg's 'split-rim' compensation balance - see my illustration of its action in heat and cold. Silvered dial with state of wind indication, blued-steel hands. Box 21 cms.
Victor Kullberg, 105 Liverpool Road, London, the most famous chronometer maker of his generation, described in Britten (6th edition) as "one of the most brilliant and successful horologists of the 19th century." Noted for the general quality of his workmanship as well as his success in many Chronometer Trials, he is known for his use of the reverse fusee and his middle-temperature-error compensation balances, both flat-rim and split-rim, as used here. NB: Kullberg made far fewer 8-day than 2-day machines, and the full list of the various workmen employed on completing this example can be seen in the Kullberg Records which survive as part of the Clockmakers' Company Library held at London's Guildhall.
This chronometer was purchased by the Crown Agents in 1919 for service in India, and was additionally engraved with an I and the date, as was then required.
The box has been repolished and the lacquer on the brass furniture re-done in recent years, as is usual for chronometers serving in India. Dial in good condition with just a few minor age spots at one edge (I can have the dial resilvered if wanted). Detent in fine original condition, as is the balance and balance-spring. Movement retaining most of the original spotting but starting to show some age related marking. Cleaned and guaranteed.
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