Can I put 2 stamps on a letter?

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Tags

1. #about
2. #paying
3. #using
4. #means
5. #costs
6. #letter
7. #standard
8. #scale
9. #regular
10. #office
11. #pages
12. #weight
13. #stamps
14. #cents
15. #every
16. #envelope
17. #example
18. #ounce