The monetary value of a half dollar coin is contingent upon several key factors, most significantly its year of mintage, which dictates its metallic composition. Based on an analysis of Kennedy half dollars, which are the most commonly encountered type, a clear distinction in value exists between different eras of production.
Coins minted in 1964 are particularly noteworthy as they consist of 90% silver. Consequently, their intrinsic value is primarily determined by the current market price of silver, making them worth substantially more than their 50-cent face value. A subsequent period, from 1965 to 1970, saw the production of half dollars with a reduced silver content of 40%. While less valuable than the 1964 issue, these coins also carry a premium over their face value due to their silver content.
Beginning in 1971, the composition of the Kennedy half dollar was changed to a copper-nickel clad alloy, eliminating silver from its production for general circulation. As a result, most half dollars dated 1971 or later, including the common 1776-1976 Bicentennial issues, are typically worth only their 50-cent face value if they show any signs of wear from circulation.
There are, however, notable exceptions for these modern, non-silver coins. Specimens that remain in pristine, uncirculated condition can command a small premium from collectors. Furthermore, special issues such as proof coins, which are minted with a high-quality finish for collectors' sets, and certain "Not Intended for Circulation" (NIFC) coins minted after 2001, are also valued above 50 cents due to their relative scarcity and collector demand. Rare mint errors or die varieties can also significantly increase the value of a half dollar from any year.
