Wildcatter,
I have an 1887 patented J.P.Sauer double hammergun that is most probably a GI Bringback, having been taken from the Sauer Armory at the end of the War by elements of the US Army Corps of Engineers. I've been in contact with Sauer in Eckernforde, Germany about this piece, and I have their contact point's email address if you want it. Would rather not post it on the message board, however. If you will somehow get me your email address via the private message function (which hasn't worked for me in the past) I'll copy you with what I have and promply erase your address for security purposes.
