Well,it's kind of hard to see from the pictures due to dirt but in the first picture at the top that shiny part where the bearing run on is normal,though if you can feel any groove with your finger then I wouldn't fit it,if so it might still be possible to make it serviceable with larger aftermarket bearings which also work on the "new" surface where the old factory bearings don't use.
If I were you I would try and clean it up well to asses the surface on the pins,to be honest I'm not 100% sure but the 1st picture it even looks okay,then again it's hard to judge by not being there in person,usually should look like this:
Have you had any chance to test if the trailing arms had any play before selling it?