AS 637

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9 3/4”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

  • Movement family:
  • All members of the family are probably marked on the bridge side as AS 574, if a caliber number is available
  • The movements are listed in the Classification Horlogère of 1936 as 9 1/4”’, although they are closer to 9 3/4”’
  • There are two variants of the setting lever spring, both can be found in movement catalogs

 

  • Listing ID: 3815
  • Manufacturer / Brand: AS
  • Caliber: 637
  • Size: 9 3/4'''
  • Shape: Round
  • Winding: Manual (Crown)
  • Hand Setting: Crown
  • Seconds Hand: None
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date & Day: None
  • Jewels: 15
  • Setting Lever Screw/Pin Position: Left
  • Balance Position: Bottom (120 - 240°)
  • Shock Protection: None
  • Beats per hour: 18,000
  • Balance Type: Monometallic screw balance
  • Power Reserve: Unknown
  • Production Period: Unknown, probably around 1936, as some of the movements are hallmarked with the TR mark of the Ebauches SA (introduced in 1936 and replaced by the new Ebauches SA mark in 1939)
  • Identification: Listed in the Classification Horlogère from 1936.
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-19#post-2941270
  • Country: Switzerland
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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