JOHN ROGER ARNOLD, LONDON, NO.250. CIRCA 1805

Details

A George III mahogany and brass-mounted one-day marine chronometer
John Roger Arnold, London, No.250. Circa 1805
BOX: two-tier with sliding viewing panel to top lid, green velvet-lined, moulded lip to the lower section for setting box into a chart table, ivory roundel inscribed 250, brass drop-down handles, square section brass gimbal and cylindrical brass bowl with screw fixing, its underside with lead balancing weight and spring-loaded winding cover, brass bezel with convex glass; box key
DIAL: silvered and engraved, with dot minute track and seconds ring, signed ARNOLD/London/250, hands of blued steel
MOVEMENT: plain plates joined by four pillars (two pinned), signed on the top plate John R Arnold London Inv:et Fecit No.250, chain and fusee with maintaining power; numbered tipsy key
ESCAPEMENT: Arnold spring detent with cut bimetallic balance with adjustable heat compensatation weights at the screw-threaded outer ends (Z balance), blued steel helical spring with diamond endstone
172 mm. square box, 80 mm. diameter dial

Literature

Illustrated, Hans Staeger, 100 Years of Precision Timekeepers from John Arnold to Arnold and Frodsham 1763-1862, Stuttgart, 1997, pp.351-352, figs.1-6.

Special notice

No VAT will be charged on the hammer price, but VAT at 15% will be added to the buyer's premium which is invoiced on a VAT inclusive basis.

Lot Essay

COMPARATIVE LITERATURE:
Vaudrey Mercer, John Arnold & Son Chronometer Makers 1762-1863, Antiquarian Horological Society, 1972, pls.86 & 154, et alia.

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