Knife Double Fullers - Ever see one like this?

[#blackpowderbill]

Here we go another unknown really nice double fullers both sides. Well constructed with a late 1800's early 1900's brass / leather sheath.
I first thought it was a modified bayonet but it fits the sheath perfect. Cutting edge on both sides-heavy thick
Antler with medallion on the bottom-
8-1/4 blade and OAL 13-1/2 +-
Not a makers mark on it
Any yinz guys see anything like this before?

It will be listed just looking for more information

Thanks
BPB