1971 Topps #710 Sonny Siebert
About Sonny Siebert
Siebert hit two home runs off Pat Dobson and pitched a three-hit shutout against the Orioles on September 2, 1971. Four of his wins that year came against Baltimore, the defending champions, and his ERA against them was 0.76. Four of the home runs he hit that year, those two among them, came against Orioles pitching, and Baltimore manager Earl Weaver said, "He just goes out there and beats us with his arm and bat." Topps #710 lists him with the Boston Red Sox.
Wilfred Charles "Sonny" Siebert was a right-handed pitcher born January 14, 1937, in St. Mary, Missouri. A two-sport star at Missouri, he played basketball for three years and helped the Tigers reach the College World Series final in his one season on the baseball team. The Cleveland Indians signed him as an outfielder in 1958, and a minor-league pitching coach later convinced him to switch to the mound. He debuted for Cleveland in 1964 and threw a no-hitter against the Washington Senators on June 10, 1966. He was selected to two All-Star teams, in 1966 and 1971. Traded to Boston in 1969, he went 16-10 for the Red Sox in 1971 while also hitting six home runs. He closed his career with St. Louis, San Diego, and Oakland, finishing 140-114 with a 3.21 ERA over 12 seasons, and later spent years as a minor and major league pitching coach. He was inducted into the University of Missouri Athletics Hall of Fame in 2004 and the St. Louis Sports Hall of Fame in 2017.
Sources: Wikipedia · SABR BioProject · Baseball-Reference · BaseballCardPedia
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 383 | 0 | 8 | 126 | 175 | 47 | 20 | 7 | 0 |
| SGC | 32 | 0 | 3 | 9 | 11 | 4 | 4 | 1 | 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 card: #386 Boston Red Sox
More Boston Red Sox cards:
- #9 George Scott
- #31 Eddie Kasko
- #58 Bill Lee
- #61 1970 American League Batting Leaders
- #63 1970 American League RBI Leaders
- #65 1970 American League Home Run Leaders
- #89 Ken Brett
- #114 Billy Conigliaro
- #159 Jarvis Tatum
- #176 Red Sox 1971 Rookie Stars
- #191 Mike Andrews
- #225 Gary Peters
- #254 Cal Koonce
- #287 Mike Fiore
Frequently asked questions
What is the 1971 Topps #710 card?
It is card #710 of the 752-card 1971 Topps Baseball set, picturing Sonny Siebert of the Boston Red Sox.
Why is #710 harder to find?
It is a high number card from the sixth and last print series, #644-752 - the scarce end of the set. Some of its cards were printed in larger numbers than others, so scarcity varies card by card inside the run.
How many cards are in the 1971 Topps Baseball set?
752 cards, tracked as 761 collectible states. Numbers run from 1 to 752 with none skipped, issued in six print series (132/131/130/130/120/109 cards), the sixth (#644-752) the high numbers; seven cards carry catalogued print variations that the master set counts separately - the #42, #265 and #306 photo pairs and the #123, #206, #369 and #619 checklists, #369 and #619 in three printings each.
Sources: Trading Card Database, PSA (its price guide, master set registry and set article), 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.