1: Rare Bicentennial quarter, nearly $12 million

2: $50 million worth in 6 more Bicentennial quarters

3: Rare coins fetch high prices in auctions

4: Bicentennial quarters, valuable collectibles

5: Keen interest in numismatic treasures

6: Investing in rare coins, a lucrative venture

7: Top rare coin auctions in history

8: Bicentennial quarters, a symbol of American history

9: Rare coin market continues to thrive