This is a tuff question to answer….I have studied this for some time and my thinking is 35 DHE OO-frame guns were assembled from the run of 50 OO-Frame barrels sets that were produced. Some A-1 specials got 410 barrels also. There were a handful of OOO-frame BHE guns built on the mini frame guns, very rare indeed. I still own a DHE three barrel set 410-28-28 PG-DT-BTF Double trigger guns are the most sought after as most were SST guns. In the real world...if a seller wants to move a 410-28 set $$$ 10 to 12K may be doable? The market is fickle to say the least! Numbers are down for sure and no one knows the future to come? Some say it is lack of new hunters and shooters entering the needs market wanting expensive SXS guns or any hunting guns that cost over a few hundred dollars or so. Most all collectables have dropped off price wise. Thanks all, SXS Ohio....
