So my dad is having a retirement auction. Among the stuff we forgot my mother had owned we found her old campfire Dutch oven covered in surface rust. I scrubbed the rust off and put a quick coat of seasoning on it just so that it didn't sell as a lawn ornament. Obviously I started thinking that maybe I should keep it. Once it was on the stove cooling off, my dad took one look at it and said " That cleaned up pretty nice, I think maybe I'll keep that after all"
Didn't think to take a before picture but here's an after.
I picked up a rusty skillet with a machined cooking surface in thrift. I've still got it 20 years later. Only one I've ever seen with a machined surface (big single swirl).