Looking for insight on origins of this blade and maybe it's an old custom?

[LGND]

I found this knife along with a vintage Mohwak USA no9 fixed blade hunting knife which displayed similar oxidation on the blade and aluminum(possibly leaded) pommel. There's a single copper rivet holding the pommel and what appears to be stacked glass and metal onto a full tang. The guard has obvious production marks like soldered metal leaves and appears to be brass. It all has a very unrefined feel to it, though with obvious skill put into its creation. The blade itself is what I'm most interested in. At 7.5 inches I'm length, its almost half the thickness of similar length modern daggers measuring 1.7-2mm along the spine. It feels thin, but is incredibly sturdy with a slight flex when force is applied, and though never sharpened has maintained an almost razor edge reminiscent of what few qualities of folded steel I'm aware of. And I found it in a custom leather sheath so weathered, I have a 50 year old leather jacket holding together better.
I scoured every bit of the knife with a spectrum shifted magnifier and can't find anything that possibly looks like an old engraving or production markings. And I've never seen nor can find anything similar to put any date or information. Figured I'd drop this where people familiar with custom blades can give their two cents. If any clearer or specific imagery is needed just ask

[rea1eye]

If only the knife could talk............

Bob

[98src]

it's a handmade WW2 "theater" knife. Usually made from materials on hand in a maintainence shop.

[Mumbleypeg]

I agree, homemade knife. Based on your description possibly made from a power hacksaw blade. Those of the “Greatest Generation” were a remarkably creative and capable lot.

Ken

[Reverand]

I agree about it being handmade. The guard looks like it might be brazed onto the blade.
My Dad made a few knives from old sawblades back before I was born, and this thin flexible blade looks similar. I wish there were some way to establish provenance, and to know who made it or for whom it was made. You know that a lot of time and care went into that knife!

[jkf96a]

I agree, handmade "theater" knife.