| 1 How big is a half dollar? 1 Which half dollar coins are silver?The Kennedy Silver Half Dollar refers to half dollar coins struck by the United States Mint from 1964-1970, however only the 1964-minted coins were composed of 90% silver. What kind of metal is a 1964 half dollar made of? 1964, silver proofs 1992–2018: 90% silver, 10% copper. 1965–1970, some 1776–1976 San Francisco-minted coins: outer layer of 80% silver, 20% copper surrounding core of 79% copper, 21% silver, totaling 60% copper, 40% silver. Circulation strikes, 1971 to present: outer layer of 75% copper, 25% nickel surrounding core of 100% copper. Where was the first US half dollar minted? The new half dollars retained their silvery appearance, due to the outer layer being 80% silver and 20% copper. The coin was also minted with an inner layer of 21% silver and 79% copper. The first clad half dollars were struck at the Denver Mint on December 30, 1965. What was the silver content of the 1965 half dollar?The half dollar was changed from 90% silver to 40%. Congress passed the Coinage Act of 1965 in July. The new half dollars retained their silvery appearance, due to the outer layer being 80% silver and 20% copper. The coin was also minted with an inner layer of 21% silver and 79% copper. | 
