Omega 1000-1321 Balance staff

• OMEGA original part, not in factory packaging.

• Fits cal: 1000, 1001, 1002

Versions cal: 1000 (27.90 RA SC PC CAL CORR INST STS 17 pierres).

• 1000:    automatic, 17 jewels, date.
• 1001:    automatic, 20 jewels, date, chronometer.
• 1002:    automatic, 20 jewels, date.