Sean Casey #121 Price Guide
Baseball · Baseball Cards 1999 Skybox Premium
Sean Casey #121 (Baseball Cards 1999 Skybox Premium) is currently worth $0.86 raw (near mint) (as of Sep 3, 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.
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Current prices
Raw (ungraded)
| Ungraded | $0.86 |
Graded — grade ladder
Last updated 2026-09-03 · Source: the PriceCharting price guide
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Is it worth grading?
Strong grading candidate — 147× premium in Grade 8
A Grade 8 Sean Casey #121 sells for $127 against $0.86 raw: a $126 spread, 147× the ungraded price. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Full grading break-even for Sean Casey #121: fee tiers, best grader, gem-rate math →
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
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Sean Casey #121 — frequently asked
How much is Sean Casey #121 (Baseball Cards 1999 Skybox Premium) worth?
As of Sep 3, 2026, Sean Casey #121 (Baseball Cards 1999 Skybox Premium): an ungraded near-mint copy sells for about $0.86, a Grade 8 sells for about $127. Values come from the PriceCharting price guide and are refreshed weekly.
Is Sean Casey #121 worth grading?
A Grade 8 Sean Casey #121 sells for $127 against $0.86 raw: a $126 spread, 147× the ungraded price. 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.