Sold for:
10,125 CHF

THOMAS EARNSHAW QUARTER-REPEATING POCKET CHRONOMETER WITH Z BALANCE GOLD Thomas Earnshaw, Invt. Et Fecit, London, No. 3973. The cases with London hallmarks for 1819-20. Very fine and rare, 18k gold, pair-cased pocket Chronometer with "Z" balance. OUTER two-body, by Richard Grove (mastermark RG), 1804, INNER two-body, "bassine", polished. White enamel with radial Roman numerals, outer minute track, large subsidiary seconds. Gold spade and leaf hands. 47 mm., frosted gilt full plate with cylindrical pillars, fusee and chain with Harrison's maintaining power, Earnshaw spring detent escapement, bimetallic "Z" balance with wedge-shaped sliding temperature weights and two gold meantime screws set with a special and unusual device in order to prevent a too important compensation for the high temperatures, single footed cock with diamond endstone, escapement jeweled, blued steel free-sprung helical balance spring with outer terminal curves. Notes Dial and movement signed. DIAM. 65 mm. THOMAS EARNSHAW (1749-1829) Born in Ashton-Under-Lyne in Lancashire, by 1780 he had the reputation of being a very fine watch finisher. He invented the modern Chronometer spring detent escapement towards the end of 1780, a design that he insisted was stolen by ARNOLD. However, it is likely that Earnshaw and Arnold arrived at their conclusions separately. Earnshaw perfected the fusing together of brass and steel to make laminae for compensation balances which previously had had to be riveted Read more…


Antiquorum

Auctioneer:
Antiquorum

Date:
2016-05-15

Archived auctions similar to Thomas Earnshaw Down arrow


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7,250 CHF

THOMAS EARNSHAW POCKET CHRONOMETER WITH Z BALANCE SILVER "Pocket Chronometer with "Z" balance" Thomas Earnshaw, Invenit et Fecit, No. 486 of the sort/2827. Very fine Read more…


Auctioneer:
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Date:
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“Pocket Chronometer with “Z” balance” Thomas Earnshaw, Invenit et Fecit, No. 429 of the sort/2660. Case by Thomas Carpenter with London hallmarks for 1800. Very Read more…


Auctioneer:
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Date:
2005-11-13


Sold for:
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Thomas Earnshaw Invenit et Fecit, No. 764-3368, with London hallmarks for 1836. Fine and rare silver poket chronometer. Later specially made three body, Read more…


Auctioneer:
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Date:
1996-06-03


Sold for:
25,300 CHF

Thomas Earnshaw, Invenit et Fecit, No. 247, circa 1795.Fine and rare, mahogany, two-day marine chronometer in French style box. Brass bowl with threaded Read more…


Auctioneer:
Antiquorum

Date:
2001-11-11


Sold for:
207,000 HKD

Privateer Chonometer Thomas Earnshaw, London, No. 3090, hallmarked 1802-03. Very fine and rare 22K gold pair-cased pocket chronometer with “Z” balance. outer: two-body, Read more…


Auctioneer:
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Date:
2004-06-06


Sold for:
$7,800

Thomas Earnshaw Two-day Marine Chronometer, London, No. 2156, 2 1/2-in. enameled Roman numeral dial marked London , subsidiary seconds, chain fusee movement marked Thos. Earnshaw Read more…


Auctioneer:
Skinner

Date:
2013-11-02


Sold for:
1,625 CHF

THOMAS EARNSHAW GOLD QUARTER-REPEATER Thos. Earnshaw, No. 119, High Holborn, London, No. 4896. The case with London hallmarks for 1830-31. Fine, quarter-repeating, heavy 18K gold Read more…


Auctioneer:
Antiquorum

Date:
2008-11-09


Sold for:
34,500 CHF

Thomas Earnshaw, Invenit et Fecit, London No.585- 3028, bearing the London Hallmarks for 1806-1807. Very fine 18 ct. gold pair cased pocket chronometer. Read more…


Auctioneer:
Antiquorum

Date:
1992-10-17


Sold for:
24,150 CHF

“Sugar-Tong Pocket Chronometer” Thomas Mc Cabe, Royal Exchange, London, No. 6183, movement by Thomas Earnshaw. Case by James Richards with London Hallmarks for 1807-8. Very Read more…


Auctioneer:
Antiquorum

Date:
2005-11-13


Sold for:
14,160 CHF

“Privateer Chronometer, Thomas Barry Esq. to his friend Capt. Mudge” Thomas Earnshaw, Invt. Et Fecit, London, No. 638/3090. The cases with London hallmarks for 1802-04. Read more…


Auctioneer:
Antiquorum

Date:
2006-05-14