A really big and old single-blade folder

[gben]

I don't know anything about this knife, but I like the size of it. Blade is too oxidized to see any stamp on the tang. Looks like someone may have re-riveted the blade in at some point with a steel rivet, but it is very solid and functional and sharp.

If anyone has a good guess as to it's origin I would like to hear it, thank-you.

 

[black mamba]

It first reminded me of a Kabar, but it's a common pattern and could have been made by many different firms.

 

[Misplaced Hillbilly]

Its an early pattern folding hunter, but like black mamba said many companies made them. The bolsters do remind me some of the Queens on this page,however I don't know if they ever used that jigging on the covers.https://www.bladeforums.com/threads/slipjoint-folding-hunter-s.1716302/page-3
Edit to add: The overall pattern is called a "swell center" or "coke bottle". Though that can apply to knives ranging in size from itty bitty pen knives to the big 'ol hunters like you have

 

[gben]

Thank-you for the input guys. I live on the south-shore of Lake Erie, so most of what is laying around here are the Pennsylvania, New-York, Ohio tools etc... Queen was very common in hardware stores around here when I was a kid, but so was everything else too.