I've had a Prestige Pro 600 2nd gen for a while now and recently acquired a second and a third. On closer inspection the third one is different from the others. This one is on the left and a 'normal' Prestige Pro 600 is on the right in the pictures.
The key differences are:
the one on the left resembles a first gen Prestige Pro in it's cosmetic detais except for the red to brown fade which is a signature PP600 quality. The original Prestige Pro is a uniform dark brown.
it also has 117 stamped on the side with the twaron description, near the collar. the PP600 doesn't have this.
also note the lack of any markings, patent no, TK52 etc. on the one on the left. the one on the right, the PP600 secnd gen had its grommets 'transplanted from a Prestige Tour deigned in austria version. but my other PP600, which is near mint and perfectly original, dows not have TK52 anywhere on its CAP, but only the Patent no.
the Prestige Pro in question also has besonders amrshond or whatever on one side, just like the brown euro Prestige 1st gen. the PP600 doesn't have any german on it.