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Description
- TISSOT original mainspring, new without factory packaging.
- Fits cal: 2451, 2461 manual wind.
Versions: 21.600 A/h. 1972 - 1979
- 2451: 17 jewels, manual wind.
- 2461: 17 jewels, manual wind, date.
- 2471: 21/24 jewels, automatic.
- 2481: 21/24 jewels, automatic, date.
- 2501: US version, 17 jewels, automatic.
- 2511: US version, 17 jewels, automatic, date.
- 2591: US version, 17 jewels, automatic, day, date.
- 2611: US version, 17 jewels, automatic, 24h display, date.
