![Tim Duncan [1957] #21 Basketball Cards 2007 Topps Chrome trading card — raw and PSA graded price guide](https://i.ebayimg.com/images/g/wPMAAeSwpfdqN1zr/s-l1600.jpg)
Tim Duncan [1957] #21 Price Guide
Basketball · Basketball Cards 2007 Topps Chrome · Released 2008
Tim Duncan [1957] #21 (Basketball Cards 2007 Topps Chrome) is currently worth $3.13 raw (near mint) and $51.87 in PSA 10 (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 | $3.13 |
Graded — grade ladder
| Grade | PSA | CGC | BGS | SGC | Graded |
|---|---|---|---|---|---|
| 10 | $51.87 | $31.00 | $67.00 | $31.00 | — |
| 9.5 | — | — | — | — | $27.57 |
| 9 | — | — | — | — | $15.50 |
| 8 | — | — | — | — | $7.50 |
Last updated 2026-07-11 · Source: the PriceCharting price guide
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Is it worth grading?
Strong grading candidate — 17× premium in PSA 10
A PSA 10 Tim Duncan [1957] #21 sells for $51.87 against $3.13 raw: a $48.74 spread, 17× the ungraded price. A PSA 9 ($15.50) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Full grading break-even for Tim Duncan [1957] #21: 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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Price alert
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Tim Duncan [1957] #21 — frequently asked
How much is Tim Duncan [1957] #21 (Basketball Cards 2007 Topps Chrome) worth?
As of Jul 11, 2026, Tim Duncan [1957] #21 (Basketball Cards 2007 Topps Chrome): an ungraded near-mint copy sells for about $3.13, a PSA 10 sells for about $51.87, a PSA 9 for about $15.50. Values come from the PriceCharting price guide and are refreshed weekly.
How much is a PSA 10 Tim Duncan [1957] #21 worth?
As of Jul 11, 2026, a PSA 10 (Gem Mint) Tim Duncan [1957] #21 (Basketball Cards 2007 Topps Chrome) sells for about $51.87, compared with $3.13 for a raw near-mint copy.
Is Tim Duncan [1957] #21 worth grading?
A PSA 10 Tim Duncan [1957] #21 sells for $51.87 against $3.13 raw: a $48.74 spread, 17× the ungraded price. A PSA 9 ($15.50) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Where do these Basketball 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 basketball 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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