Certina 630, 631 Balance Jewels Parts List
Parts list and compatibility chart for upper and lower balance jewels (pivot stones) for Certina calibers 630 and 631. References base movements 230, 240, 248, 251, 258, 260, 270, 300, 320, 340, 350, and 410 with their applicable variants. Essential technical reference for watchmakers performing balance jewel replacement, repair, and maintenance on Certina movements.
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Document Details
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- Pages
- 1
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- Category
- Watchmaking