Hi, i'm looking to buy a Gibson Les Paul Custom shop "Yamano handpicked" serial number 92454. The seller tell me it's a Yamano and give me a number :Y-LPR9HPSTBNH1 but He can't prove it . I would like to know the specifications of the guitar, what kind of authentification I can have, the year of manufacturing and informations about the number he gave to me :Y-LPR9HPSTBNH1. I tried to check with the serial number of the guitar but I could not find it (what appears is year 1959) with the guitardaterproject.