Well, honey, clad coins have been minted since 1965. The good ol' US of A decided to start making coins out of a cheaper metal sandwiched between layers of a more valuable one. So, if you're talking about those shiny, multilayered beauties, you're looking at 1965 and beyond.
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US clad coinage began in 1965.
Since then all dimes and quarters have been made of a pure copper core with outer layers of 25% nickel and 75% copper.
Halves were made of clad silver (80% copper/20% silver core, and the opposite on the outside) from 1965 to 1970. In 1971 the half dollar was changed to the same composition as dimes and quarters.
Eisenhower and SBA dollars are also made of the same copper-nickel clad metal.
Sacajawea and Presidential dollars are made of copper clad with layers of manganese brass.
Regardless of popular misunderstandings, nickels have never been made of clad metal, and since 1982 cents have been made of plated (but not clad) zinc.
Total production of 2010 U.S. dimes was 1,120,689,364 this includes clad & silver proof coins.
JFK halves are currently minted at all 3 facilities. Philadelphia and Denver strike circulation-issue clad coins and San Francisco manufactures proof coins. Proofs are available in both copper-nickel and special silver "prestige" sets.
No US 1 Dollars coins were minted in 1907.
The U.S. one dollar coin minted in 1976 was an Eisenhower dollar dated 1779-1976. Most were clad coins but some were made with 40% silver.
They were coins minted by the Philidelphia mint