PO Box 1993, Bloomington, IL 61702-1993
309 662-0159
Coinage presses strike coins at different speeds. Some coinage presses strike 120 coins per minute per die, while others strike up to 400 coins per minute per die. One even strikes 700 coins per minute per die. At this speed, malfunctions can happen.
The planchet is feed into the coinage press and rest inside the collar on the anvil die (Reverse die). After being struck, the anvil die moves upward, raising the coin. Now the coin is suppose to exit the coinage press and go to a collecting area.
If the coin does not eject properly and falls partially inside the collar, it is struck again. This is how we get Double Struck coins. The second strike is totally at random. It is possible for the coin to settle back inside the collar and be struck the second time on center. This is very rare, put it does occur.
| This is a very rare double struck Indian cent. to view a larger image, just click on the image. |
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| This is a double struck uncirculated Jefferson nickel. |
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| Susan B. Anthony Double Struck |
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| Double Struck Rotated 180 % |  |
| Another type of Double Struck Rotated 180 % |
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| Double Struck on Center |  |
| Double Struck - Saddle Struck
Notice that the coin is bent in the middle. |
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| This example is a Flip Over Double Struck Lincoln cent. |
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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 |
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