Details
Parkinson & Frodsham, London No.344: An 18ct. gold pocketchronometer
Case: Plain, consular, the reverse with engraved family crest, casemakers mark IN, hallmarked London 1804
Dial: Signed, white enamel with Roman numerals, Arabic five-minute divisions, large subsidiary seconds, gold spade hands
Movement: Signed and numbered frosted gilt, fusee, engraved cock and foot, later free-sprung bi-metallic balance with poising and regulation screws, flat blued steel hairspring with end-curves, diamond end-stone, large screwed jewelled chatons, Earnshaw detent escapement with jewelled locking stone and impulse pallet
52mm.diam.
Case: Plain, consular, the reverse with engraved family crest, casemakers mark IN, hallmarked London 1804
Dial: Signed, white enamel with Roman numerals, Arabic five-minute divisions, large subsidiary seconds, gold spade hands
Movement: Signed and numbered frosted gilt, fusee, engraved cock and foot, later free-sprung bi-metallic balance with poising and regulation screws, flat blued steel hairspring with end-curves, diamond end-stone, large screwed jewelled chatons, Earnshaw detent escapement with jewelled locking stone and impulse pallet
52mm.diam.