Which coins US made after 1964 contain silver?

The only circulating coins containing silver after 1964 were half-dollars, and they contained "debased" metal with only 40% silver and the rest copper. Production of debased halves was suspended in 1969, except for collectors' coins. Circulation coinage was resumed using copper-nickel starting in 1971.

Some Eisenhower dollars as well as Bicentennial quarters, halves, and dollars were struck in 40% silver for sale to collectors. In 1992 the US Mint resumed limited production of 90% silver coins; these are sold as "prestige coins" at a price that reflects the current value of silver plus minting and packaging costs.