1979 Topps #261 Mario Guerrero
About Mario Guerrero
On April 29, 1978, Guerrero drove in four runs as Oakland beat Cleveland, and on July 5 his two-run homer in the top of the ninth beat Seattle 5-3 at the Kingdome. He hit .275 with 3 home runs and played shortstop in 142 games. Card #261 shows him with the Athletics.
Mario Guerrero was a Dominican shortstop who played 697 major league games from 1973 to 1980 for the Red Sox, Cardinals, Angels and Athletics, hitting .257 with 7 home runs. The Yankees signed him in 1968, and he went to Boston on June 30, 1972, as the player to be named later in the Sparky Lyle trade for Danny Cater. He debuted on April 8, 1973, and in 1974 shared shortstop with Rick Burleson. A trade to St. Louis in April 1975 and another to California in 1976 followed, and he hit .284 for the Angels that year. His busiest season was 1978 with Oakland, when he played 143 games and drove in a career-high 38 runs. He played all 116 games of 1980 at shortstop for Oakland, and Seattle released him in spring training 1981. His brother Epy was a noted Blue Jays scout, and Mario later worked as a player agent and helped at Epy's academy near Santo Domingo. He died on July 2, 2023.
Sources: Wikipedia · SABR BioProject · Baseball-Reference
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 46 | 0 | 27 | 17 | 0 | 0 | 2 | 0 | 0 |
| SGC | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 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: #328 Oakland A's / Jack McKeon
More Oakland Athletics cards:
- #29 Rick Langford
- #54 Dell Alston
- #78 Elias Sosa
- #163 Glenn Burke
- #191 Mike Norris
- #201 Mike Edwards
- #224 Dave Revering
- #295 Mitchell Page
- #352 Steve Renko
- #378 Rob Picciolo
- #406 Joe Wallis
- #432 Dave Heaverlo
- #458 Jim Essian
- #487 Miguel Dilone
Frequently asked questions
What is the 1979 Topps #261 card?
It is card #261 of the 726-card 1979 Topps Baseball set, picturing Mario Guerrero of the Oakland Athletics.
How many cards are in the 1979 Topps Baseball set?
726 cards, numbered 1 through 726 with none skipped and issued as a single series, tracked as 727 collectible states: #369 Bump Wills comes with a Rangers or a Blue Jays team banner, and the master set counts both.
Sources: Trading Card Database, PSA, 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.