Zenith 2572PC-401, Winding stem
- Super rare ZENITH original stem without factory packaging.
- Thread: 0.90 mm.
- Fits cal: 2572C, 2572PC with quick set date.
Versions with 18000 A/h.
- 2510: 18 jewels, manual wind, no second.
- 2511: 18 jewels, manual wind, sub second.
- 2522: 17 jewels, manual wind, center second.
- 2522C: 17 jewels, manual wind, center second, date.
- 2522P: 17/28 jewels, automatic, center second.
- 2522PC: 17/28 jewels, automatic, center second, date.
Versions with 21600 A/h and exentric regulator.
- 2530: 19 jewels, manual wind, no second.
- 2531: 19 jewels, manual wind, sub second.
- 2532: 19 jewels, manual wind, center second.
- 2532C: 19 jewels, manual wind, center second, date.
- 2532P: 30 jewels, automatic, center second.
- 2532PC: 30 jewels, automatic, center second, date.
- 2540: 17 jewels, manual wind, no second.
- 2541: 17 jewels, manual wind, sub second.
- 2542: 17 jewels, manual wind, center second.
- 2542C: 17 jewels, manual wind, center second, date.
- 2542P: 25 jewels, automatic, center second.
- 2542PC: 25 jewels, automatic, center second, date.
- 2552C: 17 jewles, manual wind, center second, date.
- 2552P: 17/23 jewels, automatic, center second.
- 2552PC: 17/23 jewels, automatic, center seond, date.
Versions with 28800 A/h and exentric regulator.
- 2562: 17 jewels, manual wind, center second.
- 2562C: 17 jewels, manual wind, center second, date.
- 2562P: 23 jewels, automatic, center second.
- 2562PC: 23 jewels, automatic, center second, date.
Versions with 28800 A/h and micrometer regulator (1975-78).
- 2572: 17 jewels, manual wind, center second.
- 2572C: 17 jewels, manual wind, center second, date.
- 2572P: 17/23 jewels, automatic, center second.
- 2572PC: 17/23 jewels, automatic, center second, date.