Canadian Stamps and Postal History

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Constant Plate Flaws on the 1967-1973 Centennial Issue

Constant Plate Flaws on the 1967-1973 Centennial Issue

This post examines the more prominent constant plate flaws found on the stamps of the 1967-1973 Centennial Issue of Canada, such as the "Airplane in Sky" on the 1c, the broken necklace on the 5c, the doubled C on the 6c and many others.
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