Is Ken Griffey Sr. #SR worth grading?
Baseball · Baseball Cards 1999 SP Signature Autographs · full price guide →
Strong grading candidate — 7.0× premium in PSA 10
A PSA 10 Ken Griffey Sr. #SR sells for $135 against $19.31 raw: a $116 spread, 7.0× the ungraded price. A PSA 9 ($38.00) 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)
- $19.31
- PSA 10
- $135
- PSA 9
- $38.00
- Gem premium
- 7.0×
- 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 | $135 | +$90.69 | +$65.69 | −$34.31 |
| PSA 9 | $38.00 | −$6.31 | −$31.31 | −$131 |
| PSA 8 | $30.00 | −$14.31 | −$39.31 | −$139 |
Net = sale price − $19.31 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% | $62.25 | −$7.06 |
| 50% | $86.50 | +$17.19 |
| 75% | $111 | +$41.44 |
Break-even gem rate at the standard fee: about 32%. 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 |
|---|---|---|---|---|
| BGS 10 | $176 | best | 55/45 | 70/30 |
| PSA 10 | $135 | −$41.00 | 55/45 | 75/25 |
| CGC 10 | $81.00 | −$95.00 | 55/45 | 75/25 |
| SGC 10 | $81.00 | −$95.00 | 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 | $135 | $81.00 | $176 | $81.00 | — |
| 9.5 | — | — | — | — | $93.80 |
| 9 | — | — | — | — | $38.00 |
| 8 | — | — | — | — | $30.00 |
Run your own numbers
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Grading Ken Griffey Sr. #SR — FAQ
Is Ken Griffey Sr. #SR worth grading?
A PSA 10 Ken Griffey Sr. #SR sells for $135 against $19.31 raw: a $116 spread, 7.0× the ungraded price. A PSA 9 ($38.00) 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 Ken Griffey Sr. #SR worth compared with raw?
A PSA 10 Ken Griffey Sr. #SR (Baseball Cards 1999 SP Signature Autographs) sells for about $135 versus $19.31 for a raw near-mint copy — a 7.0× premium as of Jul 11, 2026.
Which grading company is best for Ken Griffey Sr. #SR?
By resale value, BGS 10 leads at $176, ahead of PSA 10 at $135. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Ken Griffey Sr. #SR 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.
What gem rate makes grading Ken Griffey Sr. #SR break even?
At a standard ~$50 fee, submitting Ken Griffey Sr. #SR breaks even when it gems about 32% of the time (a miss assumed to sell at the PSA 9 price of $38.00).
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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