heat damage

So this thing was only $10, so I figured I'd give it a chance cleaning it up. However, at the time, I didn't know about the pinkish heat damage that I needed to avoid. It came like this: After some Lye and some 50:50 vinegar baths, I got it to look like this: So in that very first...

I'm interested in a Wagner square skillet. This one looks very clean. I do notice a little reddish discoloration in here, though... I know when a cast iron gets extreme heat damage, it can get these red/pink discoloration, but it is usually more pronounced than this. But wasn't sure if this is...

So I know it is hard to tell in a photo, however eyeing a Piqua and there is definitely some damage, pitting and rust. There is a section that appears almost barn red, not orangey/gritty/brownish. This is distinctly more brick reddish. Anyone with more experience, please advise!!! It's part of...