Is Kon Knueppel #80BK-53 worth grading?
Basketball · Basketball Cards 2025 Topps 1980 · full price guide →
Strong grading candidate — 30× premium in PSA 10
A PSA 10 Kon Knueppel #80BK-53 sells for $59.00 against $2.00 raw: a $57.00 spread, 30× the ungraded price. A PSA 9 ($15.00) 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.
- Raw (NM)
- $2.00
- PSA 10
- $59.00
- PSA 9
- $15.00
- Gem premium
- 30×
- As of
- Jul 11, 2026
Break-even by outcome and fee
| If it comes back… | Sells for | Economy / bulk (~$25.00) | Standard (~$50.00) | Express (~$150) |
|---|---|---|---|---|
| Gem — PSA 10 | $59.00 | +$32.00 | +$7.00 | −$93.00 |
| PSA 9 | $15.00 | −$12.00 | −$37.00 | −$137 |
| PSA 8 | $13.53 | −$13.47 | −$38.47 | −$138 |
Net = sale price − $2.00 raw value − fee. Fee tiers are illustrative; plug your grader's current price into the calculator below.
Expected value — how often does it need to gem?
| Chance it gems | Expected sale | Expected net (standard fee) |
|---|---|---|
| 25% | $26.00 | −$26.00 |
| 50% | $37.00 | −$15.00 |
| 75% | $48.00 | −$4.00 |
Break-even gem rate at the standard fee: about 84%. Centering is the usual reason a clean copy misses — measure it before you decide.
Which grader pays the most — and what a 10 takes
All centering standards →| Grader | 10 sells for | vs best | Front centering for a 10 | Back |
|---|---|---|---|---|
| CGC 10 | $85.00 | best | 55/45 | 75/25 |
| BGS 10 | $77.00 | −$8.00 | 55/45 | 70/30 |
| SGC 10 | $59.99 | −$25.01 | 55/45 | 75/25 |
| PSA 10 | $59.00 | −$26.00 | 55/45 | 75/25 |
Tolerances are each company's published centering standard for its top grade; surface, corners and edges must also be clean. Centering is the one you can measure yourself before you pay.
Full grade ladder
Raw conditions & history →| Grade | PSA | CGC | BGS | SGC | Graded |
|---|---|---|---|---|---|
| 10 | $59.00 | $85.00 | $77.00 | $59.99 | — |
| 9.5 | — | — | — | — | $21.59 |
| 9 | — | — | — | — | $15.00 |
| 8 | — | — | — | — | $13.53 |
| 7 | — | — | — | — | $13.00 |
Run your own numbers
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
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Grading Kon Knueppel #80BK-53 — FAQ
Is Kon Knueppel #80BK-53 worth grading?
A PSA 10 Kon Knueppel #80BK-53 sells for $59.00 against $2.00 raw: a $57.00 spread, 30× the ungraded price. A PSA 9 ($15.00) 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.
How much is a PSA 10 Kon Knueppel #80BK-53 worth compared with raw?
A PSA 10 Kon Knueppel #80BK-53 (Basketball Cards 2025 Topps 1980) sells for about $59.00 versus $2.00 for a raw near-mint copy — a 30× premium as of Jul 11, 2026.
Which grading company is best for Kon Knueppel #80BK-53?
By resale value, CGC 10 leads at $85.00, ahead of BGS 10 at $77.00. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Kon Knueppel #80BK-53 need for a CGC 10?
CGC publishes 55/45 front and 75/25 back centering as the tolerance for a 10 (Gem Mint). Off-center copies are capped below the top grade regardless of surface — measure yours before paying the fee.
What gem rate makes grading Kon Knueppel #80BK-53 break even?
At a standard ~$50 fee, submitting Kon Knueppel #80BK-53 breaks even when it gems about 84% of the time (a miss assumed to sell at the PSA 9 price of $15.00).
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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