Definition: The numeric denominational value of the coin has been either re-punched or re-engraved with the same numerical or different numerical value.

The image below shows a Peruvian 1896, ½ Dino that has been re-punched with the same numeric value.

The images below of the 1801 U. S. large cent show the error fraction of 1/000 and the corrected, re-punched version to the right. The coin to the left has three errors; the U of UNITED has been formed by two II. The left stem from the right branch of the wreath is missing and the incorrect fraction.

Images are courtesy of Heritage Auctions.