Vintage Fixed Blade Knife with Leather Sheath/ Combat Knife/ Unknown/ SOG? For Sale

saleing a used vintage fixed blade combat knife with its original leather sheath. The pommel of the knife is a tad loose, I\'m certain it can be tightened. Everything else is tight. The knife is hefty and we\'ll built. The blade has a dark tinted finish, but shows somes signs of some wear (refer to pictures). The handle is leather stacked. The sheath is made of thick leather, and too is well built. The sheath has a sharpening stone. Unknown maker, no identifying marks. Nearly looks like a vintage SOG, uncertain. Please refer to pictures for measurements and a better overall description. Thank you for looking.