The 2020 Topps Diamond Icons #AC-DE trading card features an autograph from baseball legend Dennis Eckersley, who played for the Oakland Athletics. This limited edition card is part of a set with a print run of only 10 copies, with this particular card being numbered 03/10. The card is an original release by Topps for the 2020 season, making it a highly sought-after collectible for fans and collectors of baseball memorabilia.