The product is a custom trading card featuring the signature of Mark Harmon, who portrayed Leroy Gibbs on the TV series "NCIS." This unique collectible item would appeal to fans of the show and collectors of non-sport trading cards, offering a special piece of memorabilia from the popular franchise. The personalized nature of the card adds an extra element of value and interest for fans of Mark Harmon and the character of Leroy Gibbs on NCIS. GTP 3rd party authentication