Does every Rolex have a serial number?

Related questions

1. Do all Rolex watches have a serial number?
2. Do Rolexes hold their value?
3. Does a Rolex ever stop?
4. What is a Rolex Oyster Perpetual?
5. How can I tell if a Rolex serial number is real?
6. How much does it cost to replace a Rolex battery?
7. Does a Rolex hold its value?
8. How do I find out what model my Rolex is?
9. Where is the serial number on a Rolex?
10. Does Rolex Oyster Perpetual have a battery?

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14. #located
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16. #genuine
17. #metal
18. #serial
19. #clock
20. #deeply