Subscribe« Australian Proclamation Coins | Main | Split Planchet Errors Part 2 »
October 1, 2008
Australian Split Planchet Errors
Australia 1976 20c Split Planchet Error
A split planchet error occurs when there is a weakness or lamination defect in the metal blank. During the preparation of the planchet strip foreign materials may become trapped below the metal surface, eg, gas, dirt or grease. This area of the metal will be weaker and may flake, peel or split because the adhesion is poor where the foreign material is . With the example of a split planchet error the blank may split partially or wholly in 2. The above example has split completely in half and you can see parallel striations are present as the metal has split. This split has occurred after the striking of the coin. If the split were to happen prior to the coin being struck it would result in a weakly struck or blank portion of the coin surface -these errors we'll talk about in a future article. A coin in the process of splitting in 2 may have a clam-like appearance with one edge of the coin letting go.
Posted by harrisk at October 1, 2008 2:35 PM
Subscribe to our Newsletter
