Lot Essay
No. 2188 was made circa 1856.
Details
AN EIGHT-DAY MARINE CHRONOMETER
John Poole, No. 2188
the silvered dial signed and numbered John Poole MAKER TO THE ADMIRALTY. 57 Fenchurch St. LONDON 2188, Roman hour numerals, gold hour and minute hands, subsidiary seconds and up-and-down dials with blued steel hands, main frame assembly numbered 2188 carrying reversed fusee, barrel and centre wheel back pivot, sub-frame asembly numbered 2188 with chain guard, carrying remainder of train and Earnshaw escapement, cut bimetallic balance with Poole axuiliary, circular heat compensation weights, blued steel helical balance spring, spring foot detent with jewelled locking stone, brass bowl, gimballed in three-tier coromandel ebony box (later top lide) with quarter-round brass edging and single brass stringing to front, the centre section with rectangular mother-of-pearl plaque inscribed JOHN POOLE, MAKER TO THE ADMIRALTY, 57 Fenchurch Strt. LONDON, 2188, and trade label of JOHN BLISS & CO. NAUTICAL INSTRUMENTS, NEW YORK CITY, recessed brass handles
112mm. dial diam., 200mm. sq. box
John Poole, No. 2188
the silvered dial signed and numbered John Poole MAKER TO THE ADMIRALTY. 57 Fenchurch St. LONDON 2188, Roman hour numerals, gold hour and minute hands, subsidiary seconds and up-and-down dials with blued steel hands, main frame assembly numbered 2188 carrying reversed fusee, barrel and centre wheel back pivot, sub-frame asembly numbered 2188 with chain guard, carrying remainder of train and Earnshaw escapement, cut bimetallic balance with Poole axuiliary, circular heat compensation weights, blued steel helical balance spring, spring foot detent with jewelled locking stone, brass bowl, gimballed in three-tier coromandel ebony box (later top lide) with quarter-round brass edging and single brass stringing to front, the centre section with rectangular mother-of-pearl plaque inscribed JOHN POOLE, MAKER TO THE ADMIRALTY, 57 Fenchurch Strt. LONDON, 2188, and trade label of JOHN BLISS & CO. NAUTICAL INSTRUMENTS, NEW YORK CITY, recessed brass handles
112mm. dial diam., 200mm. sq. box