Coin Key Dates

Disclaimer: The information provided here is for educational purposes only and should not be considered professional advice. We discuss various aspects of coin collecting, including key dates, tips on collecting, storing, maintaining, and spotting fakes. Please consult with experienced collectors or professionals before making any significant decisions. Coin collecting involves risks, and market values can fluctuate. We have an interest in numismatic items and related products.

The goal of this page is to provide a quick reference for when you're sorting through stacks of coins. Lets us know your thoughts as we welcome your feedback and would always like to make this page (or others) more useful.

U.S. Coinage Quick Reference

Pennies

Types

  • Lincoln Wheat Cents (1909–1958)
    95% copper, 5% tin/zinc
  • Lincoln Memorial Cents (1959–2008)
    1959–1982: ~95% copper, 5% tin/zinc (3.11 g)
    Mid-1982–2008: Copper-plated zinc (2.5 g).
  • Lincoln Shield Cents (2010–Present)
    Copper-plated zinc (2.5 g)
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