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What are "Collared Dies"


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Hi, I ran into a new term, and my search fu must be weak, because my curiosity is not yet satisfied.


The Krause 19th Century Std Catalog (3rd Ed.) says that the Prussian 3 Pfennig 1846-60 (km453) was "Struck in collared dies." I'm assuming this was some advancement in the copper coining process, but could anyone elucidate, please?




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The collar die holds the planchet so the two other dies can strike and effect the design on the coin precisely. The collar die also adds edge milling, reeding or inscriptions to some coins.


Non-collared coins and tokens were often not exactly round also. The collar keeps the planchet circular during striking.


A coin struck out-of-collar(by accident) error.


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