105th Auction
2021/11/13
Lot 232
Baume & MercierTronosonic
A heavy wristwatch with day and date indicator and electromechanical precision tuning fork movement
Sold
estimated
4.800—6.000 €
Price realized
5.700 €
specific features
Case
18 K gold, screwed on back, original 18 K gold bracelet, bracelet length 170 mm, total length 210 mm.
Dial
Gilt.
Movement
,
Case no.431791
Ref.41003/423
Cal.BM 19164 / ESA 9164
Diam.37 x 41 mm
Circa1972
Ctry.Switzerland
Wt.152 g
The Tronosonic is very rare and certainly has cult status amongst collectors of fine vintage watches, whereas the gold version is particularly rare. The striking original gilt dial has two windows for the display of the weekdays and date. The tuning fork movement is fitted with an ESA calibre 9164 (licensed by Bulova) and is in perfect working order.