AN EXCEPTIONALLY SMALL GEORGE III ONE-DAY MARINE CHRONOMETER

JOHN ARNOLD & SON, NO. 427/728

Details

AN EXCEPTIONALLY SMALL GEORGE III ONE-DAY MARINE CHRONOMETER
John Arnold & Son, No. 427/728
The white enamel dial numbered 427. Roman hour numerals gold hour and minute hands, subsidiary seconds dial (at VI) with blued steel hand, gilt full-plate movement inscribed John Arnold & Son. London. Invt & Fect No. 427/728 with pierced balance cock, Arnold escapement (lacking balance and balance spring), Arnold spring detent with jewelled locking stone, brass bowl with bayonet fixing bezel, the silvered gimbal ring of typical Arnold rectangular section format and locking arm with unusual cam operation, plain three-tier miniature mahogany box with exposed dovetail corners and fruitwood quarter-round edging to top lid, external brass drop handles
42 mm. dial diam., 90 mm. sq. box

Lot Essay

This follows the format of John Arnold & Son pocket chronometers but it would appear to always have been a marine chronometer. It is almost certain to have had his Z balance which, together with the fusee chain, has become lost.
Vaudrey Mercer, John Arnold & Son, A.H.S., 1972, page 291 records No. 421/720 as a small pocket chronometer and it is illustrated, plate 87, where it is stated to have a three armed YZ non-ferrous balance. Page 212 dates No. 490/791 1794.

More from Clocks

View All