I had enough time to properly clean up two of the three cast iron skillets. I was able to identify that the 8 inch skillet was a wagner ware skillet. When I was seasoning the bottom of the pan a tiny little W and some other characters of the logo started to appear.
As for the griddle it cleaned up alright however the logo is practically rusted off and I can't really identify it. There's a lot of pitting rust on the cooking surface and I have been having trouble getting it take seasoning, I think I might have polished it to much that there is no ridges for it to stick to. The only areas that seem to be taking the seasoning are the rust pits. I will keep trying.
I suspect the logo was here
Size or model number?
Bottom profile of the griddle
Pits on the cooking surface.
As for the 8 inch skillet it cooks good. I seasoned it 3 times and it's doing just fine. Here's a photo of the logo coming through.
Oh and for the lead testing they all tested negative. I will update this post when I get the other one in good working order.
Did you try a citric acid or vinegar soak to get the rust pits? I love the small tubs of citric acid crystals you can buy for cheap. It's easier to store than vinegar and doesn't smell bad when using it.
I've seen videos of mirror polish so you don't need pits for seasoning. It's a chemical bond. My cast iron never held seasoning until I sanded it smoother.
Old and well maintained seasoning might eventually produce a completely smooth surface but that's the surface of the seasoning, not the skillet.
Videos of mirror polish are videos of near future flaking. They just don't hold up.
A surface that looks like satin paint or maybe semigloss paint when dry is pretty much the shiniest one can get without flaking.