How many copies of the Magna Carta still exist?

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Tags

1. #certain
2. #salisbury
3. #originally
4. #survive
5. #british
6. #authenticated
7. #magna
8. #medieval
9. #lincoln
10. #signature
11. #cathedral
12. #royal
13. #other
14. #still
15. #charters
16. #great
17. #carta
18. #library
19. #copies
20. #issued