Thanks fellas...great knowledge and info. Dave, that's what I originally thought it was - a variation of an SA vertical Now I have to buy the dagger for it...:D. I suppose I could put one of my Armies in it.
Its odd that a frog would be designed to fit scabbard rings that would normally be for hangers?
I think it would be a good question of the army collectors if any units authorized vertical wear. The only ones I have seen are on Bulgarian daggers.
The Bulgarians used distinct fabric hangers so the vertical wear was special. the one photo has the King wearing a distinct dagger and it is in a vertical holder. So it appears to be for a Bulgarian Honor Dagger.
Sorry we don't know more. They were relatively small armies.
Thanks Jim, nothing in Witty's book about hanger/frog variations either. It would be interesting to learn if early German armies did have variations in wear before the regular hangers became standard