I just noticed this on my headstock, I bought the les paul custom heritage cherry flame top.. it came with no scratches and still had the plastic peel off covers on the pups and pickguard.. love it, but when i checked the headstock it had a sticker over the original serial and also had a embedded stamp that said "used" at first i thought it read 'U.S' but i was incorrect. Also the last 2-4 digits were filed off. My serial begins with U06 or something. I'm assuming its the 2006 mik. Just curious if anyone else had the same thing. anyrate, it plays well although i want to change the pickups asap. Oh yeah one of the screws on the high e tuner is missing. i paid 500, was it worth that much? meh..