Most of the evidence of a die clash can be found in the low areas of a coin.
On the 1813 Large cent shown below, the die clash can be seen between the neck and the hair. Since the neck and hair of this coin is higher than the surface of the coin, the die clash is protected and will show beautifully.
Die clashes are formed when one die strikes the other die without a planchet between them. This leaves some of the details of the obverse die on the reverse die and some of the detail of the reverse die on the obverse die.
This is a 1995 Lincoln cent. We used color film and developed it
As more and more coins are struck with these dies, the details of the die clash
on special black and white paper to make the detail show. Notice
the pillars of the Lincoln Memorial Building show across Lincoln's neck.
will fade. Also, die clashes like this can cause dies to break.

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| Broadstruck | Clips |
| Die Clash | Die Cap |
| Double Denomination | Double Struck |
| Flip Over | Multi Struck |
| Mated Pair | Off Center Struck |
| Wrong Planchet |