Important Modern & Vintage Timepieces
Hong Kong, Jul 23, 2020
LOT 28
J. A. & N. S. – The Junior Army and Navy Stores
Pocket watch, patented 52 1⁄2-minute Karrusel (carrousel) regulator, Kew Certificate, Class A, 82 marks rating; 18K yellow gold
HKD 48,000 - 64,000
CHF 6,000 - 8,000 / USD 6,400 - 8,500
18K yellow gold, half hunting-case, keyless-winding, round-shaped, pocket chronometer with subsidiary seconds at 6 and patented 52 1⁄2-minute Karrusel (carrousel) regulator.
Cover and case-back polished. Cover with champlevé Royal blue enamel radial Roman numerals
White enamel dial with radial Roman numerals; blued steel “Spade” hands.
19’’’, 3⁄4 plate, ebauche by Bahne Bonniksen, gilded brass, going barrel, English lateral lever escapement, cut bimetallic compensated balance with gold and platinum poising screws and blued steel hairspring with terminal curve, diamond end-stone, index regulator, mounted on a Bonniksen 52 1⁄2-minute Karrusel (carrousel) carriage.
| Grading System | |
|---|---|
Grade: AAA |
Excellent |
Case: 3-8 |
Good Slightly scratched |
Movement: 3* |
Good Overhaul recommended, at buyer's expense |
Dial: 3-01 |
Good HANDS Original |
Brand The Junior Army and Navy Stores, Regent Street, London (York House)
Model with Kew Certificate, Class A, 82 marks rating
Year circa 1909-1910
Movement No. 125 322
Case No. M / 5 051 (by Henry Green, London, 48 Great Sutton Street, Clerkenwell; with London letter-date for 1909-1910)
Caliber 19’’’, lever escapement
Dimensions Ø 50.7 mm.
Signature movement
Notes
Karrusel (carrousel) regulator
A revolving escapement that is designed to reduce position errors in a watch and is mounted in a carriage similar to that of a tourbillion but differs from it in its slower speed of rotation and in having the fourth wheel contained inside the carriage.
A revolving escapement that is designed to reduce position errors in a watch and is mounted in a carriage similar to that of a tourbillion but differs from it in its slower speed of rotation and in having the fourth wheel contained inside the carriage.
Bonniksen, Bahne (1859-1935)
Danish watchmaker based in Coventry (Warwickshire) near Birmingham in England. Bahne Bonniksen built in the late 19th century watches, known as “carrousel” watches (British patent No. 21 421 of November 24, 1892; Swiss patent No. 7 965 of January 27, 1894), in which the carriage is driven not by the second-wheel but by the medium-wheel; its rotation is 52 minutes and 30 seconds. Bonniksen then produces “carrousel” watches with a centre-seconds hand driven by a carriage that rotates in 34 minutes, then, as early as 1903, tourbillon watches with a cage rotation of 39 minutes.
J. A. & N. S. (The Junior Army & Navy Stores), Regent Street, London (York House)
The Junior Army and Navy Stores, also known as “York House”, was founded in June 1879 by Major Clench as a cooperative society.