Not sure but that big honking brass pilot is probably the best lead. After that the joint rings......very unique I think.
I have seen such big brass pilots but I can't even begin to remember where.
I have a very old Viking that has overlapping dot inlays in the butt sleeve but beyond that I don't see any similarity. The dots are arranged very differently anyway.
The handle wood might be a clue as usually you would find maple...and that is something else I think.
Neat cue. I dig unknown cues and I love giving identifications a stab, but I have no idea on this one.