Definately real
I am going to break the sticky rule at the top & state unequivicably that his jeans are real. I own a pair of rabox 770, which is what is shown in this auction:
http://cgi.ebay.com/ws/eBayISAPI.dll...3028 335&rd=1
And assuming that the jeans he is selling look like the pix, they are nigh IDENTICAL to the rabox 770s I got on sale from the union square flagship store. Plus he's got two other models which act as GREAT litmus tests because to my knowledge there have never been fakes made of them: 1) X-rotuck 80Q. Distinctive brown color & back pocket stitching similar to the x-rotuck 796, 2) Rabox 874: The ONLY legit non-xrotuck diesels made with that x-rotuck style of back pocket stitching (the "wings").
As an aside: From this guy, I found another example of how diesel is changing things up:
http://cgi.ebay.com/ws/eBayISAPI.dll...3698 958&rd=1
Scope the back pockets. The bootleggers and going to have one HELL of a time keeping up with these new changes. Bravo diesel!