95th Auction
2017/5/6
Lot 427
Jaeger-LeCoultre "Prototype", Cal. 906, 38 x 42 mm, circa 1970
A gentleman's extremely rare automatic wristwatch with centre seconds, hack feature and day and date indicator - prototype
Case: steel, screw back with centred Jaeger-LeCoultre logo and engraving: "Prototype - Unsaleable-Hors Vente-Ausser Verkauf". Dial: silvered, textured. Movm.: rotorwind movement, hack feature, Glucydur balance.
The watch is a prototype of Jaeger-LeCoultre automatic watches fitted with a calibre 906 movement. What stands out here is the hacking mechanism made of green molded plastic, which stops the balance wheel when the crown is pulled out.
The automatic calibre 906 with chronometer standards was produced for a very short time only; Vacheron Constantin ordered it as an ébauche and used it for their Chronomètre Royal models.
A gentleman's extremely rare automatic wristwatch with centre seconds, hack feature and day and date indicator - prototype
Case: steel, screw back with centred Jaeger-LeCoultre logo and engraving: "Prototype - Unsaleable-Hors Vente-Ausser Verkauf". Dial: silvered, textured. Movm.: rotorwind movement, hack feature, Glucydur balance.
The watch is a prototype of Jaeger-LeCoultre automatic watches fitted with a calibre 906 movement. What stands out here is the hacking mechanism made of green molded plastic, which stops the balance wheel when the crown is pulled out.
The automatic calibre 906 with chronometer standards was produced for a very short time only; Vacheron Constantin ordered it as an ébauche and used it for their Chronomètre Royal models.
Sold
estimated
2.200—3.500 €
Price realized
2.800 €