Ran across this & picked it up for $5 at a local estate sale. I think it's a Jointer Plane, or perhaps a long Jack Plane, not sure; it's 18" O/A length. It has "Union" on the front of the body. The metal is sound throughout & all the pieces are there. Right now I have all the pieces soaking in white vinegar (suggested by a local person). Also have some Krud Kutter rust remover & Rust Free as followup as necessary.
I forgot to take pictures before i disassembled it, so this is all I can show at this time.
The wooden knob & handle appear to be sound & should clean up adequately.
Actually I don't know why I bought it as I doubt if I'll have a use for it. It's just that wood hand planes appeal to me for some reason & a collection is just statrting to grow. Plus I can't pass up an opportunity for what may be a good deal(?).