Omega 23.4 T2-1321, Balance staff

• OMEGA original part. Not in factory packaging.

• Fits cal: 23,4T2, 220, 230, 231

Technical data Omega cal: 23.4T2 (220).

• 15 jewels, manual wind, sub second.
• S: = 23.40 mm
• H: = 3.75 mm.
• N: = 18.000 A/h.
• Power reserve: 43 h.
• Mainspring: 1.45 x 8.5 - 0.10 - 250 mm.

Versions:

• 23.4: 15 jewels, sub second, 1936
• 23.4SC: 15 jewels, sweep second, 1937
• 23.4T1: 15 jewels, minor mod. 1941
• 23.4T2: = cal: 220 after 1949
• 23.4T1SC: = cal: 230 after 1949
• 231: 15 jewels, sweep second, antimagnetic, 1951