Check out this seller and watch the little video on his listing of buffalo nickels. I've heard of nic-a-date; but this is nuts. At least he is honest about it. http://cgi.ebay.com/Key-Date-1921-S...3286.c0.m14&_trkparms=66:2|65:1|39:1|240:1318
Well - like you said he is honest. Not sure that is nic-a-date - it seems to me it ate into the coins worse that this. Guess it could be - just never used it.
WOW. That's pretty harsh. I just got done with the big coin show in Houston. Some of the biggest, hottest auction bid wars were for Buffalo nickels. But not these e-bay types. These were PR68s... $20,000 and up ! One went for $63,250. THAT was something to watch. Apparently the buyers were convinced there were no nickel-dissolving chemicals at work on those little sweethearts.
All it takes is some vinegar, a closed container and about a week of time. I do that occasionally with no date mint marked nickels that I buy from my dealer at .20 a piece, then sell back at a small premium if they turn out to be better date coins. he knows they're restored and the customers he sells them to know they're restored, but some would rather have a type 2 13-S for $20-30 that looks as good as good as the one on that website, than a solid G-4 contraption for $250.