I have a lady friend who has had this revolver in a cigar box for 30 years. She wants to sell it, and I am trying to get any info I can to help her. It is an Arminius, with the following details: barrel length is 60mm(approx 2 3/8"). 5 shot. 87623 on butt. Grips appear to be walnut. numbers 6, 2, and 3 between 3 of the 5 round holes in cylinder. ARMINIUS on top, with an arrow on each end facing the word. DEUTSCHE-INDUSTR.F on top. KAL 7.65 on first segment of the barrel. N with figurehead above it on frame just forward of the cylinder, and the same on first segment of the barrel. foldaway trigger. The pistol does not show excessive rust. Normal action when trigger is pulled. Safety works. The cylinder pin comes out, along with the cylinder. There is something unusual about the barrel. I have looked at many photos of this type gun, and all either have a round or octagonal barrel. This revolver has the barrel starting out octagonal, then goes to round, then back to octagonal. This is the only one I have found like this. I am trying to help her find a fair value on it, and suggestions on where she can sell it. Any help will be appreciated.