Looks like 1952 88 Diesel.  Probably has disk brakes and does have Hydra-lectric switches on column, has later seat suspension.  Engine has been changed to S88 or the fuel filters have been changed to the Super variety which is not uncommon if pump problems were encountered.  If it is a 52, believe your rear axles, rear wheel hubs, and the front cast centers would all be green.  Mine are red but it is a 53.  <!-- m --><a class="postlink" href="http://home.hpphoto.com/servlet/com.hp.HPAlbumPict?com=arcsoft&amp;amp;awp=albumshow.html&amp;amp;album_id=1289354You">http://home.hpphoto.com/servlet/com.hp. ... 1289354You</a><!-- m --> can get lots of controversy over wheel hub color!!  Should find some sign of original color when you sand for restoration.  Will keep looking for a 1952 photo.  Good Luck.