Valjoux 7721

39 views

19 1/2”’ | Stopwatch | Manual Wind | Swiss Lever | Sweeping Seconds | Central Minute Counter

Remarks:

  • Stopwatch with column wheel
  • Crown: winding and start/stop second, pusher on the right: zero setting
  • Movement family:
    • 7720: Minute counter decentralized
    • 7721: Central minute counter
    • 7722: Rattrapante (flyback), minute counter decentralized
    • 7723: Rattrapante (flyback), central minute counter
  • The 7720/7721 is available with 1, 2 or 3 functions (1 F, 2 F, 3 F), the 7722/7723 with 2 or 3 functions. It is not clear exactly which ones these are. 1 F does not appear to have a column wheel.
  • All calibers of the movement family under the same caliber designation also with 36,000 instead of 18,000 bph

 

  • Listing ID: 330
  • Manufacturer / Brand: Valjoux
  • Caliber: 7721
  • Size: 19 1/2'''
  • Shape: Round
  • Winding: Manual (Crown)
  • Hand Setting: Crown
  • Seconds Hand: Sweeping seconds (central seconds)
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date & Day: None
  • Other Functions: Stopwatch
  • Jewels: 7
  • Setting Lever Screw/Pin Position: Left
  • Balance Position: Bottom (120 - 240°)
  • Shock Protection: KIF Ultraflex
  • Beats per hour: 18,000
  • Balance Type: Glucydur?
  • Power Reserve: Unknown
  • Production Period: Around 1976
  • Identification: Marked with the Valjoux logo and 7721 on the plate next to the balance. Original data sheet from 1976 is available. Listed in the addendum to the Flume K3 catalog.
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-59#post-8358156
  • Country: Switzerland
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

Leave a Reply

Your email address will not be published. Required fields are marked *

Before being published, your comment will be checked by a moderator. Therefore you will not see it immediately!

Scroll to Top