George Brett is considered one of the greatest third basemen in Major League Baseball history. The Hall of Famer spent his entire 21-year career with the Kansas City Royals from 1973 to 1993. Brett was an elite contact hitter who won American League batting titles in 1976, 1980, and 1990. He also drove in over 100 runs five times and topped the league in doubles twice. Given his legendary status and longevity in Kansas City, George Brett cards hold significant value, especially for his early career and rookie cards.

One of the most desirable George Brett rookie cards is his 1973 Topps card. This is considered his true rookie as it was his first issued baseball card appearing in a Topps set during his rookie season. In mint condition, graded MINT 9 or higher byProfessional Sports Authenticator (PSA), 1973 Topps George Brett rookie cards can sell for $10,000 or more. Even in EX-MT condition at a PSA grade of 5, these rookie cards still trade hands for $2,000-$3,000. The 1973 issue had a standard design and photo of Brett in a Royals uniform from that season.

Another coveted early Brett card is his 1974 Topps card. While not officially a rookie card, it captured Brett early in his career before his breakout seasons. PSA 10 examples have sold for $6,000, with PSA 8 copies reaching $1,500. The 1974 design differed from 1973 with quad photos and team logos above the players’ heads. This card documented Brett’s continued progress as he played in 102 games his second season.

Brett’s true breakout season came in 1976 when he batted .333 to win the American League batting title at age 23. This established value for his 1976 Topps and other 1976-77 issued cards. A PSA 10 1976 Topps Brett in pristine condition can bring as much as $1,800. In rougher condition the card still retains value of a few hundred dollars even at lower PSA grades.

In fall 1976, Topps released its seventh series featuring the playoff and World Series teams after the regular season ended. The 1976 SSP Topps George Brett is one of his scarcest and most challenging to find in high grade. PSA 10 examples have sold for over $4,000, showing the cachet of Brett cards depicting his peak playing years and success.

Brett’s most acclaimed season came in 1980 when he hit .390, becoming the first player since Ted Williams in 1941 to finish a qualification season over .390. This cemented Brett as a true superstar and elevated the value of his contemporary baseball cards, especially from 1979-80. In PSA 10 condition, his 1979 Topps Brett can fetch around $1,000. But it’s his iconic 1980 Topps Brett, graded PSA 10 of course, that commands the highest prices – recently selling for around $7,500. Even at PSA 8, the 1980 Topps Brett goes for $800 or more.

The ultra-rare 1980 O-Pee-Chee Brett rookie/rookie variation also gained greater recognition after 1980. Considered a true rookie even though Brett debuted in 1973, high-grade examples with the correctuniform reversal fetch north of $12,000 in PSA 10. This parallel Canadian issue pictured Brett wearing a button-down chest protector instead of the normal pullover style. Only an estimated 100 copies are extant in pristine 10 condition.

Brett continued producing at an All-Star level throughout the 1980s. His 1985 Topps Starr Rookie Reprint parallel portrays Brett from an iconic 1981 Topps card in a Redux style. PSA 10 versions have brought around $1,500, reflecting renewed interest in this insert over a decade after Brett’s big season. Similarly, Brett’s 1984 Fleer Update card sold for $750 in PSA 10 condition given its scarce printing quantities and depiction of his enduring greatness for Kansas City.

In 1990 at age 38, Brett produced one of the unlikeliest feats of his career by batting .329 to claim his third career AL batting title. To honor this late-career resurgence, Upper Deck released a special “1990 Batting Champion” parallel card numbered to 1990 copies. Pristine PSA 10 specimens realize $400-$500 in the market. Brett’s standard 1990 Upper Deck issue also holds value reflecting this batting title season, reaching $150 in PSA 10 NM-MT condition.

The record 3,154 hits Brett accumulated made him a lock for the Baseball Hall of Fame class of 1999. To commemorate his induction, various manufacturers issued special Brett Hall of Fame parallel cards. A PSA 10 1999 Upper Deck Hall of Fame Inductee parallel sold for around $250. A 1998 Industrial Nation Hall of Fame Parallel numbered to 1,000 copies brought $150 in PSA 10 as well.

In conclusion, George Brett established himself as not only a Kansas City Royals icon but one of the best offensive Third Basemen in MLB annals. The longevity and accolades attained in his career translate to value for virtually all of his vintage baseball cards from the 1970s and 1980s. Brett’s earliest rookie cards and issues from his statistical crowning achievements in 1976, 1980 and 1990 tend to command the highest prices today, often reaching the thousands of dollars in top PSA 10 condition for truly investment-grade specimens. But across the board, George Brett cards represent a worthwhile baseball collectible with strong enthusiast demand.