1978 Topps #596 Gary Wheelock
About Gary Wheelock
Wheelock made 17 starts for Seattle in 1977 and went 6-9 with a 4.89 ERA. He struck out 47 in 88 1/3 innings, completed two games and had elbow surgery that September. His individual Mariners card in the 1978 Topps set was #596.
Gary Wheelock was a right-handed pitcher for California and Seattle who later coached in the Mariners' organization for 33 seasons. He attended Troy High School in Fullerton, then Fullerton Junior College and UC Irvine. With the Anteaters he went 17-2 in 1974, and the Angels selected him in the sixth round of that year's draft. He returned to the majors for one Seattle start in 1980 and finished his playing career in the Dodgers' minor league system in 1981. UC Irvine inducted him into its athletics hall of fame in 1984. He later coached youth baseball in New Zealand.
Sources: Wikipedia · Baseball-Reference · BaseballCardPedia
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 166 | 46 | 98 | 18 | 3 | 0 | 0 | 1 | 0 |
| SGC | 3 | 0 | 2 | 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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Frequently asked questions
What is the 1978 Topps #596 card?
It is card #596 of the 726-card 1978 Topps Baseball set, picturing Gary Wheelock of the Seattle Mariners.
How many cards are in the 1978 Topps Baseball set?
726 cards, numbered 1 through 726 with none skipped and issued as a single series, and 728 collectible states: #23 Bump Wills comes with or without a black circle, and #374 Jose Morales with or without black stitching over the red laces, so the master set counts both states of each.
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.