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Important Modern & Vintage Timepieces.

Geneva, Mar 21, 2020

LOT 14

VACHERON CONSTANTIN, POCKET CHRONOMETER, YELLOW GOLD.

Very fine and rare, in 18K yellow gold, open-face, keyless-winding, roundshaped, pocket chronometer with subsidiary seconds at 6. Movement based on the Swiss invention patent No. 31 052, delivered on May 24, 1904, to George Marin Grandjean, Genève (former Director of the Ancienne fabrique Vacheron et Constantin, Société Anonyme), for a “Dispositif perfectionné pour la manoeuvre de la raquette.” (Improved device for the manoeuvring of a regulator). The Extract from the Archives, dated November 10, 1994, mentioned that this movement was made in 1919 and sold in 1920. The movement was completed in 1919 and delivered on April 12, 1920, to Shreve & Co., New York (U.S.A.).

Brand Vacheron Constantin, Geneva

Year Circa 1919

Numbers 18769 ( Probably by an American case-maker)

Caliber RA 17''', lever escapement, brass-Invar Guillaume balance, index regulator with patented swan-neck spring and micrometric screw, eight adjustments, no. 386090

Dimensions 45 mm.

Signature dial, case and movement

Accessories Extract from the Archives, copy of the invention patent.

CHF 4,000 - 6,000

USD 5,200 - 7,250 / HKD 40,000 - 56,000


Grading System
Grade: AAA

Excellent

Case: 3

Good

Movement: 3*

Good

Overhaul recommended, at buyer's expense

Dial: 3-01

Good

HANDS Original


Provenance

Antiquorum, Geneva, auction, November 13, 1994, The Art of Vacheron Constantin, lot 60, sold for the amount of CHF 2530.-