Ok I went to this PCGS link and looked at the D closely. It is only the D that I believe is doubled. It would be the 66 D/D FS-501. The inside of the D has a ridge of the first D inside on the NE corner. It looks like the same ridge on the coin I am showing you all. I don't see any of the D/D on the site you sent me to. But appreciate the knowledge base. Thanks
http://www.PCGScoinfacts.com/coin/detail/38527/65





























