There are some pits in the trenched part of the cases , the part where the bearings ride looks good, case mating surfaces are good , gasket surfaces look good, on a couch motor I would run them all day long , If I were building something super nice I would look elsewhere.
Like I said they could use a good beadblast , I can see if my beadblaster will work long enough to do that if you have a few days , as it doesn't need much.
Just being honest if you need pics closer up of the cases I can do that, but there is a tipping point when I sell parts, the tipping point is the point where making a little money outweighs the value of having spare parts , at $125.00 I make $100.00 when I sell them, if I was making $75.00 I would just put them back on the shelf for later use.