Hey I have never looked for errors before and the few times I have I never found anything. I have a copy of the Cherrypickers Guide and think that I might have one while I was looking through some Dimes. Its number is FS-10-1959D-511. Here is a picture of the coin and sorry for the crappy quality. I also found another coin that looks to be a RPM but is not in the guide. Here is a pic of that one too. There looks like a D on top of the other D. Please just let me know what you think it is. Any information is helpful becasue I'm trying to learn as much as I can. Thanks ND
Nice finds! On that second one, Coneca lists a d/d north as rpm001, but unfortunately they don't detail any die markers and don't provide photos, so I'm not sure, but that would be my guess.