Important Modern & Vintage Timepieces
Hong Kong, Jul 23, 2020
LOT 35
Vacheron Constantin
Exhibition movement, patented index regulator; brass
Exhibition movement, patented index regulator; brass
HKD 20,000 - 24,000
CHF 2,500 - 3,000 / USD 2,600 - 3,200
Brass, open-face, keyless-winding, round-shaped, exhibition pocket watch movement in a working-case, with patented index regulator with micrometric screw
White enamel dial with radial “Breguet” numerals; yellow gold “Fleurde-Lys” hands.
Movement 17’’’, maillechort (nickel-silver or German-silver), going barrel, gold train of wheels, gold screwed-chatons (setting), straightline equilibrated lever escapement, compensated Crausaz balance with gold poising screws and blued steel hairspring with terminal curve, lever, escape wheel and balance gold end-stone plates, patented index regulator with micrometric screw.
White enamel dial with radial “Breguet” numerals; yellow gold “Fleurde-Lys” hands.
Movement 17’’’, maillechort (nickel-silver or German-silver), going barrel, gold train of wheels, gold screwed-chatons (setting), straightline equilibrated lever escapement, compensated Crausaz balance with gold poising screws and blued steel hairspring with terminal curve, lever, escape wheel and balance gold end-stone plates, patented index regulator with micrometric screw.
| Grading System | |
|---|---|
Grade: AAA |
Excellent |
Case: 2 |
Very good |
Movement: 2* |
Very good Overhaul recommended, at buyer's expense |
Dial: 2-01 |
Very good HANDS Original |
Brand Vacheron Constantin, Geneva
Year circa 1931
Movement No. 409 003
Caliber 17 M Extra, 17’’’, lever escapement, patented index regulator with micrometric screw
Dimensions Ø 41.6 mm.
Signature dia
Accessories copy of the invention patent
Notes
Movement based on the Swiss invention patent No. 101 652, delivered on September 30, 1922, to Vacheron Constantin, Geneva, for a “Raquette de montre” (Index regulator).
This movement, calibre “17 M Extra”, was manufactured in 1931 and was never commercialised. At the time of its manufacture, this type of movement is one of the highest levels of quality and finish offered by the House. It also incorporates the recent Vacheron Constantin’s Swiss patent for the index regulator (No. 101 652). These movements are generally destined for the United States of America, where they were case by the manufacturer’s retailers (we would like to thank the Vacheron Constantin Heritage Department for providing us with this information).
This movement, calibre “17 M Extra”, was manufactured in 1931 and was never commercialised. At the time of its manufacture, this type of movement is one of the highest levels of quality and finish offered by the House. It also incorporates the recent Vacheron Constantin’s Swiss patent for the index regulator (No. 101 652). These movements are generally destined for the United States of America, where they were case by the manufacturer’s retailers (we would like to thank the Vacheron Constantin Heritage Department for providing us with this information).