What is this handle from?

[jml818]

Just dug this in an old site and kills me to not know what it was used on. Any guesses?
What is the loop for?

 

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[cactusrat]

I'm thinking its some kind of latch. To what I have no ideal.

 

[tamrock]

Our portable 185 cfm air compressor has a nut like that to clamp up the ball hitch. You can stick a breaker bar in the loop and tighten the heck out of it or loosen it with a bar also. I also thought it may be a single toggle bolt on an old time pressure cooker, but I'm not finding any examples of that.

 

[A2coins]

Hmmmmm

 

[Back-of-the-boat]

Maybe a hood latch for an old time car or tractor.

 

[lovinlife]

Interesting, I’d keep digging, hopefully you’ll find the rest!