Nothing is infalable however there are several MPRS that are excellent and you will see some of them mentioned in the LV threads. I have my own favorites. Again, do double check with the mypoupette site to verify they are a seller as some have claimed it and not been. No, they are not perfect although the few I have dealt with were awesome, only one bad experience with a MPRS seller and it was not about authenticity however. Just double check the MPRS site, then maybe even post it in the authenticate this thread for a double check and you should be hopefully ok.