Dual Date (1776-1976) - Commemorates the 200th anniversary of U.S. independence.
Special Reverse Design - Features a colonial drummer instead of the traditional eagle.
Mint Marks - Produced in Philadelphia (no mint mark), Denver (D), and San Francisco (S).
Clad vs. Silver - Most are copper-nickel, but there are also 40% silver collector versions.
Uncirculated and Proof Versions - Higher value for uncirculated and proof versions, especially silver proofs.
Condition and Grading - Value increases with better condition and professional grading (MS65+ for uncirculated, PR65+ for proofs).
Mintage Numbers - High mintage makes circulated coins common; silver proofs are rarer.
Collector Demand - Circulated quarters are usually face value, but uncirculated, high-grade, and silver versions can be worth more, often $10 to $20 or higher.