Hi there Sweathawg, welcome to GJ. As your finding out, there's a lot of knowledge on here, and some very kind helpful people.
I sent a picture of your pliers to my second-cousin-in-law who farms the other end of the county from me, here's his reply:
"Yes they're pretty well the same as my pliers although all my markings are so worn that they're illegible. I'm pretty sure they came out of the Model T."
So it seems likely that yours are the type from a Ford tool kit. Maybe a Model T expert could confirm or add further info?
Best wishes, J.