Check photos for actual card. The 1997 Topps Chrome - Season's Best Number Crunchers Refractor #SB2 Frank Thomas is a sports trading card featuring baseball player Frank Thomas. This particular card is a refractor version from the Season's Best Number Crunchers subset, showcasing Thomas' statistical achievements during the 1997 season. It is not autographed and falls under the category of Sports Trading Cards. A sought-after collectible for fans and collectors alike, this card offers a glimpse into the career highlights of the legendary baseball player.