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Message:: [QUOTE="Collecting Nut, post: 8070449, member: 74863"]Design CreepPart IV. Die Errors:Die Deterioration/Deformation Errors:Design Creep Definition: In this rare die deformation error, the die face expands during the press run.  In lateral view, it comes to resemble the battered handle of a rock chisel.  Eventually the die face expands beyond the working face of the collar (presuming the hammer die is involved).  The result is that the face of the coin struck by the deformed die lacks the design rim and the peripheral design elements are cut off. Among domestic coins, design creep has only been seen in a single run of 2014-P nickels, all of which were discovered by Robert Scheschuk.[/QUOTE]