1943 Copper Penny – Mistake: Struck on leftover copper instead of steel during WWII. – Value: Up to $1,000,000+
1955 Doubled Die Penny – Mistake: Obvious doubling on the date and inscriptions. – Value: Up to $125,000
1922 No D Penny – Mistake: Denver-only mint year, but some coins were missing the “D” mint mark. – Value: Up to $50,000
1969-S Doubled Die Obverse – Mistake: Strong doubling on the front (date, "LIBERTY", "IN GOD WE TRUST"). – Value: Up to $75,000
1983 Doubled Die Reverse – Mistake: Clear doubling on the reverse lettering (“ONE CENT”, “E PLURIBUS UNUM”). – Value: Up to $15,000
How These Mistakes Happen – Caused by leftover planchets, worn dies, or misaligned minting equipment.
Why It Matter – These rare errors turn ordinary pocket change into life-changing finds for collectors.