The value of a 1964 United States half dollar minted with a composition of 90% silver is influenced by several factors. The intrinsic worth of the coin is primarily dictated by the current spot price of silver on the precious metals market. Additional factors such as the coin’s condition, rarity based on mint marks or errors, and collector demand contribute to its overall worth.
These coins hold significance as they represent the last year that circulating United States half dollars were minted with a high silver content. This transition from silver coinage to clad compositions occurred due to rising silver costs and government monetary policy changes. Therefore, they are often seen as a tangible asset and a piece of numismatic history.