- OMEGA original balance in very good used condition.
Data: Omega 711 (25 RA SC PC AM).
- 24 jewels, automatic wind, hour and minute display, center second or no second (optional).
- Size: 25.00 mm.
- H: = 3.00 mm.
- N: = 19.800 A/h.
- Power reserve: 42 h.
Versions:
- 710: 17 jewels, (1966).
- 711: 24 jewels, (1964).
- 712: 24 jewels, chronometer, (1967).
- 715: 24 jewels, moophase, 466 pcs (1983).
- 716: 24 jewels, perpetual calendar, 193 pcs (1984).
- 717: 24 jewels, "Etoile" GMT, 48 pcs (1984).