My wife had a few dateless Buffalos she got from an old lady she used to take care of. The reverse of this one had a D on it. So I put it in vinegar about a week ago and a couple of days ago got a pleasant surprise.
The photo isn't perfect, hard to get the best angle, but the 1914 is definitely there. The other 2 dateless were a '16P and '17P.

