when did they stop putting only copper on pennies?
The advantage of saving nickels is you donât have to sort through them by date as you do with pennies. Although only pennies minted before 1982 have any copper in them, every nickel from 1946 until today contains the same amount of copper vs nickel, so every nickel you can get your hands on is worth holding onto against the day when the government starts minting nickels using cheaper content.