1: 1776-1976 Bicentennial Quarter worth nearly $40 million

2: Rare quarter auctions for over $750,000

3: Collectible coins on the rise in value

4: Top 5 more valuable bicentennial quarters

5: Gems among rare quarter finds

6: How to spot valuable coins

7: Investment potential in collectible coins

8: Historical significance of bicentennial coins

9: Rare coin market trends and opportunities