Can anyone ID this jack?

[equium]

So my friend has a thrift store and I get to pick through the donations once in a while.
I came across this old-school car jack and was wondering if anyone can ID it to one of the big 3 automakers. There were no markings other than to say to oil after each use.
Thanks for Reading
Danny

 

[RustyRatRod]

Looks like a GM part to me.

 

[krazykuda]

Jack ****???

Not sure, but its for a slotted bumper...