The worth of a 1964 Kennedy half dollar composed of 90% silver is primarily determined by two factors: the prevailing spot price of silver and the coin’s condition. Due to its high silver content, even a worn example possesses intrinsic metallic value. Examples in pristine, uncirculated condition, particularly those with full original mint luster, command a premium over the melt value.
This particular coin represents a significant period in United States coinage history, marking the transition away from silver coinage. Its appeal lies in both its precious metal content and its historical significance as a memorial to President John F. Kennedy. The presence of silver adds an inherent floor to its value, insulating it from complete worthlessness, unlike subsequent base metal issues. Further, the year 1964 saw the last production of circulating U.S. coins with a 90% silver composition, contributing to its collector interest.