Card of the Day: 1955 Topps #123 Sandy Koufax RC
Sandy Koufax's rookie card is one of the great pitching cards in the hobby — a 1955 Topps #123 that is nearly impossible to find at the top of the grade scale, with just three copies ever reaching GEM-MT 10. For Brooklyn Dodgers collectors and vintage set-builders alike, #123 is the anchor of the entire 1955 checklist.
The Card
Koufax debuted with the Brooklyn Dodgers in 1955 at age 19, and his 1955 Topps rookie arrived just as the franchise was finally breaking through — the Dodgers won their first World Series that very season. Over a career that was brief but overwhelming, he threw four no-hitters, including a perfect game in 1965, won three Cy Young Awards (1963, 1965, 1966 — all unanimously), took home the NL MVP in 1963, and was named World Series MVP twice (1963 and 1965). Arthritis forced him into retirement after the 1966 season at just 30 years old; he was elected to the Hall of Fame in 1972 at age 36, the youngest inductee in history at the time.
That résumé — a short, dominant peak from a left-hander who left the game at his best — is what makes his rookie card a cornerstone for two kinds of collectors: Dodgers historians who treat it as the franchise's foundational pitching card, and vintage baseball set-builders who need it to complete one of the 1950s' toughest checklists.
The Condition Challenge
1955 Topps is one of the classic condition-challenged 1950s sets, and Koufax's #123 is among its toughest cards at the top. Of 9,980 graded copies, just 3 have reached GEM-MT 10, a gem rate of 0.03%. Even MINT 9 is nearly as scarce at just 25 copies. The population is stacked toward 8s and below: 245 cards sit at NM-MT 8, with the remaining thousands spread across the lower grades.
PSA Population Report
| PSA Grade | Population | Value |
|---|---|---|
| GEM-MT 10 | 3 | — |
| MINT 9 | 25 | $376,500 |
| NM-MT 8 | 245 | $32,200 |
| Total Graded (All Grades) | 9,980 | — |
* Population data as of August 5, 2026. PSA population counts are dynamic and increase as more cards are submitted for grading.
Where the Value Lives
The price ladder tells the scarcity story. On the PSA Price Guide, a NM-MT 8 runs $32,200, and a MINT 9 jumps to $376,500 — more than eleven times the price of an 8. The GEM-MT 10 carries no listed guide value at all, which is what happens when a population of three leaves the market with essentially no comps to anchor on. For most collectors, the realistic play is the 8: a genuine Hall of Fame rookie from a condition-challenged 1950s set, with a six-figure ceiling and a nearly unreachable top grade above it.
For the most dominant left-hander of his era, the 1955 Topps Koufax is a rookie card with a brutal gem rate, a nearly unreachable top — and a condition story that makes every well-centered copy matter.
