Important Modern & Vintage Timepieces
Hong Kong, May 10, 2020
LOT 225
Vacheron Constantin - Pocket chronometer with Observatory Bulletin; 18K yellow gold
HKD 31,200 - 39,000
USD 4,000 - 5,000 / EUR 3,700 - 4,600 / CHF 4,000 - 5,000
18K yellow gold, open-face, keyless-winding, round-shaped, pocket chronometer, with subsidiary seconds at 6. Case-back polished. White enamel dial with suspended “Dauphine” numerals. 19’’’, gilded brass, going barrel, gold screwed-chaton (setting) on the central wheel, straight-line lever escapement, compensated brass-Invar Guillaume balance with gold and platinum poising screws, patented index regulator with micrometric screw.
| Grading System | |
|---|---|
Grade: AAA |
Excellent |
Case: 3-17 |
Good Slightly spotted |
Movement: 3 * |
|
Dial: 3-70-01 |
Good ENAMEL AND VARIOUS TYPES OF DECORATION Hairline HANDS Original |
Brand Vacheron Constantin, Geneva
Model “Chronomètre”, with First Class Bulletin de marche from the Astronomical Observatory of Geneva
Year circa 1925
Movement No. 403 118
Case No. 253 024
Material 18K yellow gold
Diameter 53.8 mm.
Caliber 19’’’, lever escapement, Guillaume balance
Signature dial, case and movement
Accessories copy of the invention patent