Omega 590-1321, Balance staff

• OMEGA original balance staff, not in factory packaging.
  

• Fits cal: 590, 591, 592, 593

Data Omega cal: 590

• 17 jewels automatic wind, center second.
• S: = 27.80 mm.
• H: = 5.35 mm.
• N: = 19800 A/h.
• Power reserve: 48 h.

Versions:

• 590: 17 jewels.
• 591: 20 jewels.
• 592: 17 jewels, date.
• 593: 20 jewels, date.