Vietnam era M1917 bayonet and scabbard questions?

[browningautorifle]

That was my first thought too, if you look at the butt where the small attaches to steel, you see the chevron shape of a Win 1200 series...not the straight line of an Ithaca...also the silver of a lifter in the bottom and an Ithaca doesn't have that kind, they have an open fork.