1: Introduction to the 1964 Washington Quarter Proof coin.

2: History and significance of the 1964 Washington Quarter Proof.

3: Collecting tips and buying guide for the 1964 Washington Quarter Proof.

4: Key features and design of the 1964 Washington Quarter Proof.

5: Rarity and value of the 1964 Washington Quarter Proof.

6: How to authenticate and preserve the 1964 Washington Quarter Proof.

7: Notable sales and auctions of the 1964 Washington Quarter Proof.

8: Expert opinions and reviews of the 1964 Washington Quarter Proof.

9: Conclusion and final thoughts on collecting the 1964 Washington Quarter Proof.