Is Brooks Robinson #21 worth grading?
Baseball · Baseball Cards 1970 Kellogg's · full price guide →
Worth grading — even a PSA 9 beats raw
A PSA 10 Brooks Robinson #21 sells for $967 against $23.89 raw: a $944 spread, 40× the ungraded price. Even a PSA 9 ($133) 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)
- $23.89
- PSA 10
- $967
- PSA 9
- $133
- Gem premium
- 40×
- As of
- Sep 4, 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 | $967 | +$919 | +$894 | +$794 |
| PSA 9 | $133 | +$83.72 | +$58.72 | −$41.28 |
| PSA 8 | $64.69 | +$15.80 | −$9.20 | −$109 |
Net = sale price − $23.89 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% | $341 | +$267 |
| 50% | $550 | +$476 |
| 75% | $759 | +$685 |
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 | $1,258 | best | 55/45 | 70/30 |
| PSA 10 | $967 | −$291 | 55/45 | 75/25 |
| CGC 10 | $580 | −$678 | 55/45 | 75/25 |
| SGC 10 | $580 | −$678 | 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.
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Grading Brooks Robinson #21 — FAQ
Is Brooks Robinson #21 worth grading?
A PSA 10 Brooks Robinson #21 sells for $967 against $23.89 raw: a $944 spread, 40× the ungraded price. Even a PSA 9 ($133) 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 Brooks Robinson #21 worth compared with raw?
A PSA 10 Brooks Robinson #21 (Baseball Cards 1970 Kellogg's) sells for about $967 versus $23.89 for a raw near-mint copy — a 40× premium as of Sep 4, 2026.
Which grading company is best for Brooks Robinson #21?
By resale value, BGS 10 leads at $1,258, ahead of PSA 10 at $967. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Brooks Robinson #21 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.
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