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Important Modern & Vintage Timepieces

Hong Kong, Oct 27, 2019

LOT 408

JULES JÜRGENSEN POCKET WATCH WITH MINUTE-REPEATER AND PATENTED HAND-SETTING BY FOLDING BOW; 18K PINK GOLD

18K pink gold, hunting-case, keyless-winding and patented hand-setting by folding bow, round-shaped, pocket watch, with subsidiary seconds at 6, minute-repeater on two steel gongs (activated by the slide at 4 o’clock).

Brand Jules Jürgensen, Copenhagen and Le Locle

Year Circa 1871-1873

Movement No. 12 666

Calibre  19’’’ (ebauche by Piguet & Lecoultre, probably Vallée de Joux), lever escapement

Case No. 12 666

Diameter 54 mm

Signature Dial, case and movement

Accessories Copy of the invention patent; copy of the Manufacture book

HKD 50,000 - 80,000

CHF 6,250 - 10,000 / USD 6,400 - 10,200

Sold: HKD 68,750


Grading System
Grade: AAA

Excellent

Case: 3-8

Good

Slightly scratched

Movement: 3-8*

Good

Slightly scratched

Overhaul recommended, at buyer's expense

Dial: 3-70-01

Good

ENAMEL AND VARIOUS TYPES OF DECORATION Hairline

HANDS Original


Notes

Movement based on the American invention patent No. 61 207, delivered on 15 January, 1867, to Jules Jürgensen, Copenhagen and Le Locle, for a “Improvement in stem setting watches” and on the American invention patent No. 161 239, delivered on 23 March, 1875, to Jules F. U. Jürgensen, Le Locle, for a “Stem-setting Watch”. 

Jules Jürgensen’s patented hand-setting 
For setting the hands, throw up the glass cover and turn the pendant bow close down upon the glass. In this position the winding crown sets the hands. In all other positions the crown winds as usual. 

Jules Jürgensen’s Manufacture books 
Part of Jules Jürgensen’s production books are now kept at the horological museum of the Château des Monts in Le Locle. 
The page concerning the watch No. 12 666 gives us the name of all
 the craftsmen who contributed to the realization of this watch, whose final production cost amounts to 1 066.45 Francs. It is found that the ebauche of the movement with its patented keyless-winding mechanism cost 285 Francs while the gold case cost 362.50 Francs.