1977 Topps #631 Big League Brothers - George Brett / Ken Brett
On this card: George Brett, Ken Brett
About this card
Cards #631-634 are the Big League Brothers subset, each pairing two brothers: George and Ken Brett (#631), Bob and Ken Forsch (#632), Lee and Carlos May (#633) and Paul and Rick Reuschel (#634).
The story on this card
Big League Brothers runs #631-634 in the 1977 set, and #631 puts George Brett of the Kansas City Royals next to his older brother Ken Brett of the Chicago White Sox. George, the youngest of four brothers, hit .333 with 215 hits in 1976 and won his first batting title on the last day of the season. Ken spent that year with the Yankees and then the White Sox, who got him in mid-May for Carlos May. He went 10-12 with a 3.28 ERA, including a no-hit bid into the ninth inning at California on May 26.
George Brett - Kansas City Royals third baseman and first baseman from 1973 to 1993. He collected 3,154 hits, hit .390 to win the 1980 American League MVP award, took batting titles in three decades, and was inducted into the Hall of Fame in 1999. Left-hander Ken Brett pitched for ten major-league clubs over fourteen seasons. In 1967 he became the youngest pitcher ever to appear in a World Series, and in 1973 he set the record for a pitcher with home runs in four consecutive starts.
Sources: Wikipedia (George Brett) · Wikipedia (Ken Brett) · SABR BioProject (George Brett) · SABR BioProject (Ken Brett) · BaseballCardPedia
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 408 | 1 | 46 | 178 | 61 | 47 | 28 | 47 | 0 |
| SGC | 39 | 0 | 1 | 11 | 12 | 5 | 6 | 4 | 0 |
Graded population — a scarcity guide, not a price. Data as of 2026-10-19. Half grades fold down for both graders (8.5→8); PSA qualified slabs (OC, ST, PD, MC and the like) are not counted.
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Related cards
Team cards: #371 Kansas City Royals Team, #418 Chicago White Sox Team
More Kansas City Royals cards:
- #1 1976 Batting Leaders
- #46 Buck Martinez
- #75 Dennis Leonard
- #93 Tom Poquette
- #117 Frank White
- #141 Mark Littell
More Chicago White Sox cards:
Frequently asked questions
What is the 1977 Topps #631 card?
It is card #631 of the 660-card 1977 Topps Baseball set, picturing George Brett and Ken Brett. Cards #631-634 are the Big League Brothers subset, each pairing two brothers: George and Ken Brett (#631), Bob and Ken Forsch (#632), Lee and Carlos May (#633) and Paul and Rick Reuschel (#634).
How many cards are in the 1977 Topps Baseball set?
660 cards, numbered 1 through 660 with none skipped and distributed as a single series. No card carries a catalogued print variation, so the base set and the master set are the same 660 cards.
Sources: Trading Card Database, PSA CardFacts, BaseballCardPedia, Cardboard Connection, Baseball Almanac, Baseball-Reference, the SABR BioProject and the National Baseball Hall of Fame, PSA & SGC population reports. Card data compiled and maintained by T206Cards.com. Page last updated 2026-10-25.