Why do they call it 007?

Related questions

1. What does M in James Bond stand for?
2. Why did they kill M in Skyfall?
3. Was Goldfinger a member of Spectre?
4. How much was Daniel Craig paid for James Bond?
5. Is Skyfall house a real place?
6. Who was the oldest James Bond?
7. Is James Bond a codename?
8. What is Thomas Shelby's haircut called?
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Tags

1. #because
2. #first
3. #awarded
4. #words
5. #killed
6. #casino
7. #novel
8. #blood
9. #means
10. #twice
11. #adaptation
12. #concept
13. #royale
14. #assignments
15. #assignment
16. #fulfilling
17. #number
18. #course
19. #introduced