Don Mattingly [AL] #300 Price Guide
Baseball · Baseball Cards 1988 Topps · Released 1988
Don Mattingly [AL] #300 (Baseball Cards 1988 Topps) is currently worth $63.66 raw (near mint) (as of Jul 11, 2026). Values come from the PriceCharting price guide and are refreshed weekly. Grading is the single biggest value lever — check the raw-to-PSA-10 gap below, then scan your copy to see if its centering makes the grade.
Current prices
Raw (ungraded)
| Ungraded | $63.66 |
Graded — grade ladder
| Grade | Graded |
|---|---|
| 9.5 | $356 |
| 9 | $324 |
| 8 | $294 |
| 7 | $150 |
Last updated 2026-07-11 · Source: the PriceCharting price guide
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Is it worth grading?
Worth grading — even a PSA 9 beats raw
A Grade 9.5 Don Mattingly [AL] #300 sells for $356 against $63.66 raw: a $292 spread, 5.6× the ungraded price. Even a PSA 9 ($324) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Full grading break-even for Don Mattingly [AL] #300: fee tiers, best grader, gem-rate math →
Should I pay this?
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Don Mattingly [AL] #300 — frequently asked
How much is Don Mattingly [AL] #300 (Baseball Cards 1988 Topps) worth?
As of Jul 11, 2026, Don Mattingly [AL] #300 (Baseball Cards 1988 Topps): an ungraded near-mint copy sells for about $63.66, a Grade 9.5 sells for about $356, a PSA 9 for about $324. Values come from the PriceCharting price guide and are refreshed weekly.
Is Don Mattingly [AL] #300 worth grading?
A Grade 9.5 Don Mattingly [AL] #300 sells for $356 against $63.66 raw: a $292 spread, 5.6× the ungraded price. Even a PSA 9 ($324) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Where do these Baseball card prices come from?
Prices are the PriceCharting price guide, refreshed weekly. Raw values reflect near-mint (NM) ungraded copies; graded values are per grading company and grade.
Is your baseball card centered well enough to grade?
Centering makes or breaks a PSA 10. Scan any card with Midpoint to measure its exact centering, get a grade estimate, and see what your copy is actually worth.
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