I would agree with Luis on the yoke screws being swapped. That was the first thing I noticed when I saw them. Hopefully the seller will see Luis's posting.
Not only are the yokes swapped, so are the nozzles which makes me wonder what other problems exist inside. I can see no good reason to do a swap like that so I can only assume whoever did it had no clue what they were doing and that makes me wonder what other damage they may have done...or are they frankenstein regs someone threw together from parts, which pretty much distroys their value as a collectors item.