I started a thread about collecting post copper cents, and was recommended to read several website offerings. So the first I chose was Wexler's on Double Dies.
In the opening paragraphs for Double Dies He writes; "The key to doubled dies lies in the name - doubled die! As we have seen, coins are struck by steel rods that bear the design images for the coins that they will be striking. These steel rods are called dies.
For a doubled die coin to be produced, the doubled image must be on the die itself, hence the term "doubled die." Doubled dies occur when there are mishaps in making the dies that will be used to strike the coins."
So the Double Die 1955
Lincoln Wheat cent, the die itself had the double Dates and it was not a Double Striking Error ?
Dan