11 1/2”’ | Automatic | Swiss Lever | Small Seconds | Pointer Date |

Remarks:

• Additional module for pointer date and indirect small seconds at 6H
• Wheel train and motion works are driven independently of each other by the mainspring barrel
• Part of a movement family:
  • GT44: Hand winding, sweeping seconds
  • GT54: Automatic, sweeping seconds
  • GT55: Automatic, small seconds
  • GT56: Automatic, small seconds, pointer date
  • GT58: Automatic, sweeping seconds, date
  • GT60: Automatic, date, moon phase, power reserve

• Listing ID: 2587
• Manufacturer / Brand: Revue Thommen
• Caliber: GT56
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Automatic
• Hands Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date
• Jewels: 27
• Setting Lever Screw/Pin Position: Left
• Balance Position: Right (0 - 120°)
• Shock Protection: Incabloc
• Beats per hour: 19,800
• Balance Type: Nickel?
• Power Reserve: 42 hours
• Production Period: Built from 1961, production resumed in 2002 after an interruption
• Country: Switzerland
• Identification: Original data sheet of the GT56 from 2004 available.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-35#post-4326297
• External Link 2: https://watch-movements.eu/blog/en/2018/11/11/revue-thommen-watch-movements-of-the-modern-era/