The 1984 Topps Don Mattingly #8 is valued at $13.25 raw, $133 in PSA 9, $1,952 in PSA 10 as of November 3, 2026. Its market value is down 5.4% over the last 30 days, from $14.00 to $13.25. Across the 89 days we have tracked it, it has ranged from $11.24 to $16.67, and it currently sits 21% below that high. With 4,064 recorded sales, it ranks in the top 10% of baseball cards we track by trading volume.
On current values, a PSA 9 ($133) is worth $95.06 more than a raw copy plus a $25.00 grading fee, and a PSA 10 ($1,952, 147.3× raw) is worth $1,914 more. The cheapest PSA 10 copy we matched on eBay when we last checked on November 2, 2026 was $1,000, 49% under our PSA 10 market value of $1,952.
About $13.25 raw, $133 in PSA 9, $1,952 in PSA 10, based on our market values as of November 3, 2026. Its market value is down 5.4% over the last 30 days, from $14.00 to $13.25.
On current values, a PSA 9 ($133) is worth $95.06 more than a raw copy plus a $25.00 grading fee, and a PSA 10 ($1,952, 147.3× raw) is worth $1,914 more. This ignores gem rate and selling fees, so treat it as a best case.
The cheapest PSA 10 copy we matched on eBay when we last checked on November 2, 2026 was $1,000, 49% under our PSA 10 market value of $1,952.