Introduction: Overview of Bicentennial quarters and their collectible value.

Double Strikes: Rarity and value of double-struck quarters.

Misprints: Common misprints that increase worth.

Off-Center Strikes: Importance of off-center errors for collectors.

Clipped Planchets: How clipped planchets impact value.

Grading:  Role of condition in determining value.

Authentication: Importance of verifying rare errors.

Market Trends:  Recent sales and auction results for error quarters.

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