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With the passage of the Coinage Act of 1965, the composition of the dime changed from 90 percent silver and 10 percent copper to a clad "sandwich" of pure copper inner layer between two outer layers of cupronickel (75% copper, 25% nickel) alloy, giving a total composition of 91.67% Cu and 8.33% Ni.
All nickels struck from 1866 to mid-1942 and since 1946 have been in 75% copper and 25% nickel. Those struck from mid-1942 to 1945 were made of silver, copper, and manganese to save nickel metal for the war effort.
The current clad version of the quarter is two layers of cupronickel, 75% copper and 25% nickel, on a core of pure copper. The total composition of the coin is 8.33% nickel, with the remainder copper.
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What is the value of Jefferson nickels dated 1964 and before?
That's a very broad question because there are about 90 different combinations of dates, mint marks, and major varieties. Most Jefferson nickels dated 1938 to 1963 are not worth a significant premium, but there are some exceptions:1938-D : $1 to $30 depending on condition1938-S : $1 to $251939-D : $2 to $80"War nickels" 1942 to 1945 : $2 to $151950-D : $5 to $20Except for those "war nickels" that contain about 1.5 gm of silver, ALL other US nickels regardless of date are made of an alloy of 25% nickel and 75% copper. The only 90% silver denominations made up to 1964 were dimes, quarters, and halves.
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