Longines 503-2543, Date change wheel
- NOS LONGINES original part in factory sealed packaging.
- Comes with screw 52243
- Fits cal: 503, 505, 506, 507, 508
Versions: 19800 A/h:
- 501: date.
- 503: day, date.
- 505: quickset date.
- 507: day, quickset date.
Versions: 21600 A/h, micrometer regulator:
- 506: quickset date.
- 508: day, quickset date.