The Canadian Cent Mint Error That Put Queen Elizabeth II on Both Sides A No-Date Canadian Cent With a Dramatic Minting Accident “Two heads are better than one” rarely applies to coins. However, this no-date Canadian cent makes a strong case. A Canadian one-cent mint error, cataloged as no date and circa 1978-1989, closed in a GreatCollections online auction on April 19, 2026. CACG certified the coin Mint State 62 Brown.