I have to see a bit more to determine authenticity on those Concords. I purchased my Concord 11's from FNL and they had peaks on the toebox too, so that's not a dead giveaway. My 23 on the heal is cracking and stretched out like the photos above. I looked at the outsole and it's yellowing around the pods, just like mine.
As far as purchasing them, I think you shouldn't -- not because it's "fake" but, rather, it's old and too worn. The new ones are coming at the latter end of the year, so no need to (over)pay for some 2011's.