Certina 919.1-420/423, Crown wheel & core

• NOS Certina original parts in factory sealed packaging.

• Fits cal: 853-1, 854-1, 919-1, 920-1

Data Certina cal: 919-1

• 25 jewels, automatic wind, quickset date, hack feature.
• Size: 11.5''' 25.60 mm.
• H: = 5.25 mm.
• N: = 28.800 A/h.
• Power reserve: 45 h.

Versions:

• 853-1: manual wind.
• 854-1: manual wind, date.
• 919-1: base caliber, automatic wind, date.
• 920-1: automatic wind, day, date.