The Treasury Department said the last pennies were stamped with a special omega mark and will not go into circulation.
  • Rhaedas@fedia.io
    8·
    11 hours ago

    1943 was the one year they made the zinc plated steel pennies. They’ve been various ratios of copper before and after (from 88% to 97%) until 1982, when they turned to 97.5% zinc with a 2.5% copper plating.