1989 Lincoln Memorial Cent - What Is Or Caused This ?

I think this is a explanation of the varieties of errors. Coin World http://www.coinworld.com/newcollect...striking.asp

And the best one for beginners from there site is this one:

Machine, mechanical, Strike Doubling: A form of doubling, this is one of the two most common types of Mint errors. Some do not consider it an error, but believe it to be a form of Mint-caused damage.


Mechanical Doubling
Most, however, believe it a true form of error coin. The cause is a looseness of the die or other parts in the press which causes the die to twist as it comes in contact with the surface of the newly struck coin. In twisting, the die drags the metal of the raised designs to one side, creating the doubled image. The doubling is flat, like a shelf.

It looks possibly like a Retained Cud.

Is it the whole roll of coins or just one coin?

its one coin so far I have several rolls that I got at one time and that one was on the end of the roll or the begining of the roll
co

Yep, the full picture confirms it for me- retained cud- nice find

great thank you guys for the help
colleen

Let me explain my thinking.

The crack appeared to go rim to rim and the field level on the inside of the curve seems to be higher than the field area outside the curve. But the design is was still visible. This would imply that the piece of the die has broken from the rest of the die and has shifted in position but os still held in place sufficiently to impart its design to the coin. Retained Cuds typically occur on the anvil die because the piece of the die breaks loose and shifts downward but is held in place and prevented from falling away (retained) by the collar. If the piece then manages to fall away or is driven down far enough that it no longer imparts its design and it becomes a full Cud.