UTC UT 28A = Seiko 21 D

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6 3/4 x 8”’ | Hand Wind | Swiss Lever | No Second |

Remarks:

  • Seiko Diafix setting for the escape wheel on the bridge side
  • Listing ID: 264
  • Manufacturer / Brand: UTC Universal Time Corporation (Seiko subsidiary)
  • Caliber: UT 28A = Seiko 21 D
  • Size in French Lignes: 6 3/4 x 8'''
  • Shape: Form
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: None
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date, Day, Month...: None
  • Jewels: 17
  • Setting Lever Screw/Pin Position: Right
  • Balance Position: Right (0 - 120°)
  • Shock Protection: Seiko Diashock
  • Beats per hour: 19,800
  • Balance Type: Glucydur
  • Power Reserve: Unknown
  • Production Period: Unknown, probably around 1970
  • Identification: Movement marked with UT 28A. Data sheet for Seiko 21 D available.
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-60#post-8462414
  • Country: Japan
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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