i think this is the one he is talking about
http://www.ebay.com/itm/1967-Cat-Caterpillar-D8H-Dozer-Bulldozer-D8-/331911429335?hash=item4d47767cd7:g:6Z4AAOSwubRXJ3ZA
looks like it has run through riche bros at some point by the sticker on the blade.
well them pics are nice but they don't tell you much non of the U/C. i would say someone it trying to make a quick buck as the RB sticker has not bean wore off yet or they got it home and found out why it's at the auction. it may be ok but go and see if first hand and take a good look at the U/C. take it for a drive see how it starts as some people have differing opinions of starts and runs well. looks like it might have bean a plow cat or deep ripping so take a good look at the back end for cracks. let us know how it turns out.