Where/ how can I get an item authenticated?
I've got a guitar signed by a band that I would like to get authenticated. I know its real, as I won it in a contest from the band's label, but heaven forbid I ever need to sell it, I think a COA would be beneficial. I also think it would just be cool to have, it would look nice displayed next to the instrument.
What's the best way to go about getting the guitar authenticated, and then getting the certificate?