Rolex caliber 1055b
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| Brand: | Rolex |
|---|---|
| Reference: | 1055b |
| Base: | Rolex 1055 |
| Movement: | Automatic |
| Display: | Analog |
| Diameter: | 28.50 |
| Jewels: | 25 |
| Frequency: | 18000 |
| Date: | Date, Day |
| Hands: | Hours, Minutes, Seconds |
| Additionals: | Chronometer |
1055b description
Second generation Rolex Day-Date movement; altered 1055. 7.1mm high instead of 7mm. Introduced around 1957

