Thanks for the opinions and advice. I have gotten some decent deals on other key dates buying only coins that are graded and slabbed. I do this for obvious reasons being that photos can lie and the raw coin you buy may not look like the one in the pic. I do have most of the key dates for the Buffalo's except for three legged 1937 and 1918-D 8/7. I have 1913-D and 1913-S type 2 and 24-s, 26-s, 21-S, 14-D and 14-S and 17-S. The 15-S has been harder to get in at least F-15 that looks good enough so I am shooting a VF. Which coin of the group is most desirable and in what condition for a collector with modest means? What I have is a set of mostly F+ and VF coins and that is where I will probably stay since I am not an investor, but a collector. I did see some Buffalo's on
ebay that had obviously been given the acid test. They look bad to me. I want a strong date on my coins if nothing else. I did a set of LSQ's and got all strong dates except the 1916 which I have not gotten yet. $7000 for a small, thin coin with a good date is a lot of money IMO, but what do I know?