Certina 420, 422 Crown Wheel Parts Certification
Parts certification document for Certina crown wheels (roue de couronne) models 420 and 422. Lists applicable calibres: 13-50, 13-51, and 15-20. Model 420 shows crown wheel component. Model 422 shows crown wheel ring component. Calibre compatibility table indicates models 15-21, 17-21I, and 17-22I for the 15-20 base calibre.
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Document Details
- Format
- Pages
- 1
- Size
- 387.4 KB
- Category
- Horlogerie