It is very unusual to see a mid 1930s undyed B-3 to come up for sale and especially one in such good condition in a decent size. It is from the 37-2063-P no-name maker contract. I suspect a collector with deep pockets or a reproduction maker will buy it. It could sell for in excess of $2000.
http://www.ebay.co.uk/itm/262783173880?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT
http://www.ebay.co.uk/itm/262783173880?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT