"Signed memorabilia" refers to items that have been autographed by a famous person, such as a celebrity, athlete, or historical figure, which are collected or purchased by fans and collectors as special keepsakes or collectibles. Full definition
Not surprisingly, FSU QB Jameis Winston has been investigated for signing memorabilia (similar to UGA RB Todd Gurley the week prior) but FSU Head... (sportsinsights.com)
Grad works for Beckett as an authenticator, someone who can spot things like forgeries and certify signed memorabilia. (sbnation.com)
They'll at least give him a gift certificate to the Warriors Team Store, good for everything except signed memorabilia. (sbnation.com)