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Wrong planchet Wrong planchet is a type of striking error that includes all coins that have been minted on objects other than those intended by the characteristics of the issue decree. An object refers to any physical thing that could end up in the beating chamber during the minting process for any reason. An example…

Partial collar The coin error type known as “partial collar” is similar to broad typing in that it results from a malfunction of the monetary press during the minting process. During the minting process, three elements come into action simultaneously: the upper die, the lower die, and the collar.As previously discussed in the sub-category of…

Double or multiple strike Off-center strike is a type of coin error that occurs when a coin is struck off-center, resulting in an incomplete or partial design. This error can also occur with double or multiple strikes when a coin is struck two or more times before being ejected from the beating chamber. Coins with…

Off center strike Off-center strikes are a type of coin error that occurs due to a horizontal misalignment of the planchet with respect to the position of the dies installed on the money press in operation. This error happens when a planchet is fed into the press and falls into the spinner improperly. The result…

Broadstrike Broadstrike is a type of coin error that occurs when a coin is minted outside the collar due to a malfunction of the monetary press. The collar is a retaining ring that establishes the final diameter of the coin just minted and sometimes also impresses the engravings on the edge. When a broadstrike error…

Hub retouching The sub-category of coin errors known as “hub retouching” refers to mistakes made by engravers during the hub design phase. These errors can go unnoticed until the coins are distributed to banks and enter circulation as ordinary currency. Upon discovery of such errors, production is temporarily suspended so that the engraver can correct…

Punching errors Punching errors are a type of coin error that encompasses all production errors of the die that can be found on design elements such as letters, numbers, and other distinctive features. The punching process involves the use of special “punches” that are compressed onto the coin to complete or refine the design elements.However,…