The Mondani Collection of Rolex Wrist...
Geneva, May 14, 2006
LOT 577
Escapement Model ?One-minute Flying Tourbillon Regulator, Grossmann Pivoted Spring Detent Escapement? Ecole d?Horlogerie d?Anet, construit par G. Moreau et ses élèves. Made in 1923. Very fine and very rare, working model of a one-minute flying tourbillon regulator with Grossmann pivoted spring detent chronometer escapement and special balance, under a glass dome and with wooden base.
CHF 25,000 - 30,000
EUR 16,000 - 20,000 / USD 19,000 - 23,000
Sold: CHF 40,120
C. Turned mahogany with applied dedicated metal plaque, glass dome. M. Brass base plate with spotted decoration, going barrel, tourbillon cage constructed of two brass posts and two bridges, Grossmann pivoted spring detent escapement, four-arm balance with steel meantime adjustment nuts, cylindrical brass screwed temperature adjustment weights on steel arms set at approximately 80 degree angles to the balance arms, blued steel flat balance spring. Dim. 15.5 x 14.5 cm. Excluding glass dome. To be sold without reserve
| Grading System | |
|---|---|
Grade: AAA |
Excellent |
Case: 3 |
Good |
Movement: 3* |
Good Overhaul recommended, at buyer's expense |