FHF 691N M8 / ST 691N M8

27 views

8 3/4”’ | Hand Wind | Swiss Lever | Sweeping Seconds | Date |

Remarks:

  • The movement is an FHF 691N with date module M8
  • There is also a data module M6 with 6 3/4 x 8”’

 

  • Listing ID: 3336
  • Manufacturer / Brand: FHF / ST
  • Caliber: FHF 691N M8 / ST 691N M8
  • Size: 8 3/4''' (base movement 6 3/4 x 8''')
  • Shape: Round
  • Winding: Manual (Crown)
  • Hand Setting: Crown
  • Seconds Hand: Sweeping seconds (central seconds)
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date & Day: Date
  • Jewels: 17
  • Setting Lever Screw/Pin Position: Right
  • Balance Position: Right (0 - 120°)
  • Shock Protection: Ruby-Shock
  • Beats per hour: 21,600
  • Balance Type: Nickel
  • Power Reserve: Unknown
  • Production Period: Probably around 1978, because original data sheet from 1978 available
  • Identification: FHF/ST logo, 691N and M8 marked under balance wheel.
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-26#post-3633471
  • 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Your email address will not be published.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