The valuation of a 1964 Washington quarter is multifaceted, primarily determined by its metallic composition, physical condition, and any rare characteristics it may possess. The fundamental value of any 1964 quarter is derived from its silver content. These coins were minted from a composition of 90% silver and 10% copper, which gives them an intrinsic value, often referred to as "melt value," that fluctuates directly with the spot price of silver in the commodities market. As such, even a heavily worn 1964 quarter will be worth its weight in silver.
The coin's condition, or grade, is the next critical factor in determining its worth beyond the base melt value. For circulated coins, which show signs of wear from use, the value is typically slightly above the silver value. Depending on the degree of wear, a coin in "Good" condition might be valued around $5.40, while one in "Extremely Fine" condition could be worth closer to $5.55. These minor increases reflect a modest numismatic premium for coins that have retained more of their original detail.
A significant increase in value occurs with uncirculated, or mint state, specimens. These are coins that were never used as currency and show no signs of wear. An uncirculated 1964 quarter can be worth from $6.00 to over $17, with the price escalating based on the specific grade (e.g., MS-60 vs. MS-65). Coins in the highest states of preservation, such as MS-66 or above, are considerably scarcer and can command hundreds of dollars from collectors due to their exceptional condition.
Finally, certain rare varieties can dramatically increase a 1964 quarter's value. Collectors actively seek out error coins and die varieties. For example, some 1964 quarters feature a "Type C" reverse, which is a rare transitional design. Similarly, the 1964-D (Denver mint) quarter has a known Doubled Die Obverse (DDO) variety that is highly prized by numismatists. The presence of such unique features removes the coin from the standard valuation model, making it a rare collectible with a value determined by collector demand rather than its condition or silver content alone.
