What is the value of a 1964 silver US nickel?

The only nickels with silver in them were minted during WW2. All others are made of 75% copper and 25% nickel. A 1964 nickel is worth face value in circulated condition.

Huge numbers of nickels were churned out in 1964 because higher-denomination silver coins were being withdrawn and melted. Nickels and pennies were the only coins that didn't have silver in them so they stayed in circulation. Their low value meant you'd get frequently get a fistful of change because nothing larger was available.

Remember, a nickel weighs twice as much as a dime so if they'd both been made of silver back then, a nickel would have been worth as much as 2 dimes, which wouldn't have made a lot of "sense".