Is Jerry Koosman #356 worth grading?
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Worth grading — even a PSA 9 beats raw
A PSA 10 Jerry Koosman #356 sells for $304 against $1.97 raw: a $302 spread, 154× the ungraded price. Even a PSA 9 ($54.09) 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.
- Raw (NM)
- $1.97
- PSA 10
- $304
- PSA 9
- $54.09
- Gem premium
- 154×
- 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 | $304 | +$277 | +$252 | +$152 |
| PSA 9 | $54.09 | +$27.12 | +$2.12 | −$97.88 |
| PSA 8 | $17.42 | −$9.55 | −$34.55 | −$135 |
Net = sale price − $1.97 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% | $117 | +$64.67 |
| 50% | $179 | +$127 |
| 75% | $242 | +$190 |
Even a miss (a 9) beats selling raw after the standard fee — the gem rate only decides how much you win by.
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 |
|---|---|---|---|---|
| BGS 10 | $396 | best | 55/45 | 70/30 |
| PSA 10 | $304 | −$91.72 | 55/45 | 75/25 |
| CGC 10 | $183 | −$213 | 55/45 | 75/25 |
| SGC 10 | $183 | −$213 | 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 | $304 | $183 | $396 | $183 | — |
| 9.5 | — | — | — | — | $77.34 |
| 9 | — | — | — | — | $54.09 |
| 8 | — | — | — | — | $17.42 |
Run your own numbers
Should I pay this?
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Grading Jerry Koosman #356 — FAQ
Is Jerry Koosman #356 worth grading?
A PSA 10 Jerry Koosman #356 sells for $304 against $1.97 raw: a $302 spread, 154× the ungraded price. Even a PSA 9 ($54.09) 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.
How much is a PSA 10 Jerry Koosman #356 worth compared with raw?
A PSA 10 Jerry Koosman #356 (Baseball Cards 1974 Topps) sells for about $304 versus $1.97 for a raw near-mint copy — a 154× premium as of Jul 11, 2026.
Which grading company is best for Jerry Koosman #356?
By resale value, BGS 10 leads at $396, ahead of PSA 10 at $304. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Jerry Koosman #356 need for a BGS 10?
BGS publishes 55/45 front and 70/30 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.
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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