Certina 1639, 1640 Winding-up Wheel Jewel Technical Data
Technical data for Certina watch movements 1639 and 1640, detailing upper and lower winding-up wheel jewels with base caliber references 17-351 and 19-45, applicable to calibers 19-451, 19-55, and 19-551. Includes technical specifications and observation notes essential for accurate jewel identification and replacement during service and maintenance of these movements.
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Document Details
- Format
- Pages
- 1
- Size
- 424.4 KB
- Category
- Watchmaking