Important Collectors Watches, Pocket ...

Geneva, May 10, 2009

LOT 230

Split-Seconds with Diablotine P. H. Doret, Locle, No. 10039. Made circa 1860. Very fine, rare, early and unusual, 18K yellow gold, huntingcased, two-train keyless winding pocket watch with two-train independent split-seconds chronograph without return to zero function and 1/4 second diablotine.

CHF 7,000 - 9,000

USD 6,000 - 8,000 / EUR 4,600 - 6,000

C. Four-body, "bassine et filets", engine-turned covers with polished borders and band. Hinged gold cuvette with engineturned border. D. White enamel, radial Roman numerals, outer minute track and outermost fourths of a second ring, subsidiary 1/4 seconds foudroyante. Blued steel Breguet hands. M. 20???, maillechort, two-train special caliber with tandem winding, 30 jewels, fausses cotes decoration, counterpoised straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator, independent split-seconds chronograph with push pieces in the bezel for stop/start and stop/rejoin. Cuvette signed. Diam. 56 mm.


LOADING IMAGES
Click to full view
Image
Grading System
Grade: AA

Very good
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3-05

Good

HANDS Luminous material reapplied

Notes

This watch can be considered a true chronograph with independent train. It is interesting because it probably dates from just before the Adolphe Nicole patent of 1862, and is therefore one of the early developments of the split seconds mechanism for chronographs. Unlike the Adolphe Nicole patent, the hands of the present watch cannot be reset to zero.