Former Chicago White Sox first baseman Frank Thomas is considered one of the best hitters of his generation. Nicknamed “The Big Hurt,” Thomas played from 1990-2008 for the White Sox and then briefly for the A’s, Blue Jays and Mariners at the end of his career. Along the way, Thomas racked up impressive stats, awards and accomplishments that are reflected in the value of his baseball cards from throughout his playing days.

Between his rookie card released in 1991 and his final season in 2008, dozens of Frank Thomas cards were printed by the major card companies like Topps, Fleer, Upper Deck and Bowman. The value of these varies greatly depending on the year, condition, rarity and other factors. Generally speaking, his rookie cards from 1991 are among the most valuable, along with prestigious insert and parallel cards from the peak of his career in the 1990s. Here is a more in-depth look at some of Thomas’ top cards and their estimated worth:

1991 Topps Frank Thomas Rookie Card (Base): As Thomas’ official rookie card, this is one of the most sought after and valuable cards from his entire collection. In pristine near-mint to mint condition (Graded Gem Mint PSA 10), it can fetch $2,000-$3,000. Very good to excellent condition copies commonly sell for $300-$700. Poor conditioned copies may go for under $100.

1991 Fleer Update Frank Thomas Rookie Card: Not technically a true rookie since it was released mid-season as an update set addition, but still very scarce and desirable. Near-mint to mint PSA 10 copies have sold for over $1,000. Most graded good to excellent copies sell in the $150-$500 range.

1992 Topps Gold Frank Thomas #162: One of Thomas’ early prestigious “parallel” insert cards from Topps’ Gold set. Only available one per wax pack in very limited numbers. PSA 10 gems have sold for upwards of $2,000, with excellent condition copies bringing $300-$700.

1993 Finest Refractor Frank Thomas #69: Perhaps Thomas’ most iconic and valuable card issued during his MVP seasons of 1993-1994. Finest was Upper Deck’s premium “refractor” insert set highly sought after by collectors. PSA 10 copies of this Thomas card have sold for over $3,000. Near-mint fetches $1,000-$2,000 typically.

1994 Edge Signature Frank Thomas: Rare autograph parallel insert from Upper Deck’s high end “Edge” brand. Thomas’ signature adds tremendously to the card’s rarity and demand. Ungraded excellent condition copies have sold for $2,000-$4,000.

1995-1998 Ultra Gold Medallion Frank Thomas Autograph: Short printed parallel autographed insert cards issued one year after Thomas’ first MVP season. Extremely scarce and amongst the rarest Thomas autographed cards available. Excellent condition copies have sold in the $4,000-$6,000 range.

1999 Bowman’s Best Refractors Frank Thomas #10: Highly collectible refractors inserted one per pack in this premier Bowman issue. Near-mint PSA 9 copies have reached $1,000 at auction. Solid copies typically $300-$700.

2000 Topps Tiffany Frank Thomas #151: Luxury parallel version on high-end cardboard. Higher numbers produced than 1990s Tiffany but still quite scarce for Thomas collectors. Near-mint PSA 9 copies around $500. Excellent condition between $200-$400.

2005 Playoff Contenders Autographs Frank Thomas: Late-career autographed parallel issued during Thomas’ short postseason with the A’s. Still a rare modern autographed insert. Pristine PSA 10 copies have sold for over $1,000.

2008 Topps Opening Day Frank Thomas: Thomas’ final major issue base card as an active player with the Mariners. Lower print runs compared to other 2008 Topps issues. Near-mint PSA 9 copies reach $100. Solid near-mint copies $50-$75.

As one of the game’s most prolific power hitters and two-time American League MVP, Frank Thomas’ collectible baseball cards consistently hold strong value and demand amongst investors and collectors alike. Many of his rookies, autographed cards and parallel inserts from the peak of his career in the early 1990s White Sox tenure command the highest prices. But even his later period and modern issue cards keep an appropriate level of worth reflecting his stellar MLB accomplishments and staying power as one of baseball’s all-time great sluggers.