Scarce and usually spectacular is the wrong planchet error coin. These are one of the simplest error coin types to explain. Basically these are coins struck on planchets other than the type they were intended to be struck on. Perhaps…

In a previous entry about brockages I discussed briefly how they were formed. I also mentioned that Australian pre-decimal brockage coins can be hard to come by. Fortunately I’ve been able to obtain an image of a nice example of…

An interesting (but not particularly scarce) type of coin error is the lamination flaw or planchet flaw error. It is also sometimes known as a peel error. A lamination or planchet flaw or peel coin error occurs when there is…

Another type of out of collar coin error is the ‘ramstrike’ or ‘high lip’ coin error. This sort of error occurs when the planchet is partially off-centre or out of alignment when the coin striking process starts. As the hammer…

There are a few different types of clipped planchets which we have spoken about before. These are often called clips, edge bites or bitten edge coins. During the coin manufacturing process blanks are punched from a long metal strip. The…

A clipped planchet or edge bite error coin occurs when a coin is struck on an incomplete planchet. Coin blanks are punched out from strips of metal using a high-speed punch. Sometimes the strip isn’t pushed along far enough after…