Is Mark McGwire #47 worth grading?
Baseball · Baseball Cards 1988 Topps U.K. Mini · full price guide →
Strong grading candidate — 32× premium in PSA 10
A PSA 10 Mark McGwire #47 sells for $89.00 against $2.76 raw: a $86.24 spread, 32× the ungraded price. A PSA 9 ($16.37) 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)
- $2.76
- PSA 10
- $89.00
- PSA 9
- $16.37
- Gem premium
- 32×
- 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 | $89.00 | +$61.24 | +$36.24 | −$63.76 |
| PSA 9 | $16.37 | −$11.39 | −$36.39 | −$136 |
| PSA 8 | $5.41 | −$22.35 | −$47.35 | −$147 |
Net = sale price − $2.76 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% | $34.53 | −$18.23 |
| 50% | $52.69 | −$0.07 |
| 75% | $70.84 | +$18.08 |
Break-even gem rate at the standard fee: about 50%. 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 | $116 | best | 55/45 | 70/30 |
| PSA 10 | $89.00 | −$27.00 | 55/45 | 75/25 |
| CGC 10 | $53.00 | −$63.00 | 55/45 | 75/25 |
| SGC 10 | $53.00 | −$63.00 | 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.
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Other 1988 Topps U.K. Mini cards worth checking
Full set checklist →Grading Mark McGwire #47 — FAQ
Is Mark McGwire #47 worth grading?
A PSA 10 Mark McGwire #47 sells for $89.00 against $2.76 raw: a $86.24 spread, 32× the ungraded price. A PSA 9 ($16.37) 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 Mark McGwire #47 worth compared with raw?
A PSA 10 Mark McGwire #47 (Baseball Cards 1988 Topps U.K. Mini) sells for about $89.00 versus $2.76 for a raw near-mint copy — a 32× premium as of Sep 4, 2026.
Which grading company is best for Mark McGwire #47?
By resale value, BGS 10 leads at $116, ahead of PSA 10 at $89.00. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Mark McGwire #47 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 Mark McGwire #47 break even?
At a standard ~$50 fee, submitting Mark McGwire #47 breaks even when it gems about 50% of the time (a miss assumed to sell at the PSA 9 price of $16.37).
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