click on obverse image to enlarge, then measure the distance from top of '1' to tip of Abe's nose - original strike = 14.0 cm / added 'strike' < 14.0 cm Draw you own conclusions
Altered. This thing was made outside of the mint to fool somebody. A piece like that would not have a perfect reverse if it had been made at the mint. Someone took another cent and banged it into the face of this one, with the top coin placed to the north and rotated relative to the "error" coin.
I thought it may have been altered after being minted. If so there would be damage to the reverse that could be seen as well. To hold it in a vice would cause something odd. The force needed to shape the metal is high . Now I believe it had stuck firmly to the reverse die and took the damage while being minted. Although I am new to collecting that is my idea.
The error is genuine. It is known as a shifted die cap strikethrough. Read about this error below http://www.error-ref.com/shifted-cap-strike/
Wow...... That's a new one to me. I'm running at approximately 0% success on these error threads...... please keep them coming because I'm learning a lot.
I thought it fitting that you posted this one in succession with the last thread. It looks like the die cap struck at least one other coin. If I have that right?
Because this coin was only struck once. A planchet struck before this one stuck to the hammer die, receiving multiple strikes as each new coin came into the chamber. That die cap is what was actually striking the new planchet. Thus, you get multiple images because the die cap was struck multiple times - but the coin in the OP was only struck once.