I got a catalog in the mail today that I actually did not throw out! It is the American Royal Arts catalog which is a catalog of fine art collectibles and memorabilia of the entertainment world. They have autographed memorabilia of musicians including some of my favorites; The Beatles, Led Zeppelin, and The Allman Brothers Band. The have signed collectibles of actresses Audrey Hepburn, Marilyn Monroe, and Judy Garland. The catalog also displays autographed memorabilia of actors Clark Gable, Al Pacino, and Sylvester Stallone. They did not display any prices throughout the catalog so I went to their website to see if I could find any there and I found that they have even more entertainment collectibles on their website but no prices. I am sure they are worth a lot. They do list a phone number to call for pricing.
I started researching to see how you can find out how much a collectible is worth and I came across a site that lists all different kinds of memorabilia and explains how to determine the worth of a collector's item. They have a music memorabilia buying guide that helps you estimate how much the collectible is worth. For instance, if the artist is dead, then the item is automatically worth more. The condition of the item determines its worth too. I checked out their section of autographed guitars and they do list some websites that give you pricing for you to compare. They showed a Tom Petty autographed guitar listed for 1,499.00! I think that is pretty reasonable.