1 Premansite 4 months ago As I mentioned, I've taken on a daunting task of selling off a cool guitar / instrument collection that is Fender heavy. 36 guitars plus another dozen instruments and 10 amps, and since the original collector died I have no one to ask about some of these pieces. There are 12 - 15 Fender commemorative, Custom Shop, or Anniversary model guitars that I'm trying to ID, find a year, and ascertain a ball park market value. Some are obvious and a definitive serial number is provided. Others, not so much ... some have what appears to be a serial # on the back of the headstock, some have serial #'s on the chrome base plate where the neck joins the body, and some have Certificates of Authenticity with a serial #. Almost all of them have (in the case pocket) a little 5" x 3" card with blocks checked off with initials (pic attached) which has #'s written on it, that DON'T jive with the other serial #'s on the guitar. What is this card and what are those #'s?