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Seiko 6139B, Automatic framework with ball bearing, no: 903463
Seiko 6139B, Automatic framework with ball bearing, no: 903463

Seiko 6139B, Automatic framework with ball bearing, no: 903463

Tax included.
  • Used SEIKO original part in very good condition. Picture shows the actual part.
  • Part no: 903463
  • Fits cal: 6139B


Technical data: SEIKO 6139B

  • 17 jewels, automatic wind, chronograph, 60 s, 30 min counter, day-date.
  • S: = 27.0 mm.
  • H: = 8.0 mm.
  • N: = 21.600 A/h.
  • Power reserve: 45 h.


Versions:

  • 6138A: 21 jewels.
  • 6138B: 21 jewels, modified switch mechanism.
  • 6139A: 21 jewels, without 12 h counter.
  • 6139B: 17 jewels, without 12 h counter, modified switch mechanism.