I have found one S over S stamped coin already and need to send it in to get graded. Found two others that look a little off to me. Are these two a stamp over stamp or just filled?
There are no "stamps" here. Stamps are used to mail letters. Coins are struck, not "stamped". It is possible you have a repunched mintmark (RPM) there. But I'll defer to the folks who are more into that sort of thing, who might have more knowledge.
I think you mean Re-punched Mintmark. Have you looked here to compare with yours? http://www.varietyvista.com/02a LC RPMs Vol 1/RPMs 1955S.htm
Thank you all for the information. So if what you sent and my eyes are correct i lucked out and got three RPM 1955 coins from the last purchased group of coins. Now the hard part to figure out if they are worth sending in to get graded by PGCS or NGC.
Almost certainly not worth it unless the coin itself (ignoring the RPM) would grade out at 67 RD or better.