Hamilton 987F
Tax included.
Technical data: Hamilton 987-F (1937 - 1948).
- 17 Jewels, manual wind, sub second.
- Size: 6/0 24.80 mm.
- H: = 4.15 mm.
- N: = 18.000 A/h.
- Power reserve: 38 h.
- Mainspring: 1,40 x 9,5 x 0,13 x 270 T-brace.
Versions:
- 987: jewels in insettings.
- 987F: friction fit jewels.
- 987E: Elinvar hairspring, monometallic hairspring.
- 987A: redesign.
- 987S: redesign, sweep second.