FHF 691N M8 / ST 691N M8

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

Remarks:

  • Movement family:
    • FHF / ST 69: 18,000 bph, setting lever screw, no seconds, no date
    • FHF / ST 69-21: 21,600 bph, setting lever screw, no seconds, no date
    • FHF / ST 69N: 21,600 bph, setting lever pin, 3/4 plate, no seconds, no date
    • FHF / ST 69N M6: 21,600 bph, setting lever pin, 3/4 plate, no seconds, date (date module 15.3 x 17.8 mm)
    • FHF / ST 69N M8: 21,600 bph, setting lever pin, 3/4 plate, no seconds, date (round date module 19.4 mm)
    • FHF / ST 691: 21,600 bph, setting lever screw, 3/4 plate, sweeping seconds, no date
    • FHF / ST 691N: 21,600 bph, setting lever pin, 3/4 plate, sweeping seconds, no date
    • FHF / ST 691N M6: 21,600 bph, setting lever pin, 3/4 plate, sweeping seconds, date (date module 15.3 x 17.8 mm)
    • FHF / ST 691N M8: 21,600 bph, setting lever pin, 3/4 plate, sweeping seconds, date (round date module 19.4 mm)
    • FHF / ST 692: 21,600 bph, setting lever pin, no 3/4 plate, no seconds, no date
    • FHF / ST 692 M6: 21,600 bph, setting lever pin, no 3/4 plate, no seconds, date (date module 15.3 x 17.8 mm)
    • FHF / ST 692 M8: 21,600 bph, setting lever pin, no 3/4 plate, no seconds, date (round date module 19.4 mm)

 

  • Listing ID: 3336
  • Manufacturer / Brand: FHF / ST
  • Caliber: FHF 691N M8 / ST 691N M8
  • Size in French Lignes: 8 3/4''' (base movement 6 3/4 x 8''')
  • Shape: Round
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: Sweeping seconds (central seconds)
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date, Day, Month...: 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: Unknown, probably around 1978
  • Identification: FHF/ST logo, 691N and M8 marked under balance wheel. Original data sheet from 1978 available.
  • 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)

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