This happened to some of the Iowa coins I had made. It's not Groundspeak.com problem, it happens when the coins are made. I was told that the coin maker does the numbering 1 by 1 so they have the possibliity of making a mistake. I checked all of my coins before I mailed them and had a handfull that needed to be redone. The coin maker sent me new ones at no charge to me, I had them in a week.