Do all Rolex watches have serial number between lugs?

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Tags

1. #under
2. #after
3. #clock
4. #model
5. #number
6. #rolex
7. #inside
8. #serial
9. #etches
10. #watches
11. #crystal
12. #between
13. #engrave
14. #started
15. #sealed
16. #numbers
17. #bezel