1: Rare bicentennial quarters hold hidden gems worth over $150,000

2: Look out for quarters minted in 1976 with no mint mark

3: The most valuable bicentennial quarter is a missing "S" variety

4: Keep an eye out for quarters with a deep mirrored proof-like finish

5: Some valuable bicentennial quarters have an error in the design

6: Check your change for bicentennial quarters with a repunched mint mark

7: Experts advise collectors to look for quarters graded by reputable coin grading services

8: Rare bicentennial quarters are extremely sought after by collectors

9: Do thorough research before selling or buying rare bicentennial quarters