How is a Broadstruck coin made?
A broadstruck coin is formed when the collar is not surrounding the planchet during the strike.
The collar should completely surrounds the reverse die to help hold the planchet in place during striking. This helps the detail form on the coin and helps form the edge of the coin. On coins with reeded edges, the reeding design is in the collar. When the metal is forced against the collar, the reeded edge is formed.
The collar floats on springs independent of the die. Thus the collar can be down or at an angle when the planchet is struck. If the collar was attached to the coinage press in a fixed position, it could result in serious damage if the die struck the planchet incorrectly.
If the collar is not in the proper position when the planchet is struck, it allows the metal to be distorted outward. If the collar is jam on one side but not the other, you will get a partial collar strike. On reeded coins, the reeding will not show completely around the coin.
If any part of the design is missing on the coin, it is not a broadstruck, it is an off center struck coin.
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1984 P Broadstruck Roosevelt dime: Notice that only the left side of the coin was struck without a collar. This would be a partial collar Broadstruck coin.
The collar places the reeded edge on this coin. The side that was struck without a collar will not have a reeded edge.
| Broadstruck Washington Quarter on a Type 1 planchet. |
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| Broadstruck Washington Quarter on a Type 1 planchet with a straight clip. |
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| This is a very special Broadstruck Lincoln cent. Notice the curled strip. What are the odds of the curled strip staying of the coin. |
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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 |