1991 Topps Mark McGwire #270
Oakland Athletics · Exists with and without the decimal point in his 1987 slugging percentage ("618" vs ".618"); Grok priced the card as one line
Raw (ungraded)$1–$2
PSA 8$2–$5
PSA 9$4–$8
PSA 10$25–$35
Values collected by hand from recent sales, Oct 2026.
Raw vs. graded
Bars show the estimated price range for each grade on a log scale. Pending means that grade has not been collected yet.
Raw$1–$2
PSA 9$4–$8
PSA 10$25–$35
On eBay now
Live listings from eBay. Affiliate links.
Is it worth grading?
Grading costs more than most raw junk wax cards sell for. Only consider it if the card is sharp: centered, four clean corners, no print lines or wax stains. Check the PSA 10 vs raw gap above once values are in.