Heuer 12-734, Hairspring for balance
- HEUER original hairspring for balance in very good used condition.
- Fits Heuer cal: 12, 14, 15 (21.600 A/h)
Versions: Heuer
- 11: N: = 19800.
- 12: N: = 21600.
- 14: as cal: 12 with 24h GMT.
- 15: as cal: 12, sub second instead of 12 h counter.