Is Mark McGwire #690 worth grading?
Baseball · Baseball Cards 1990 Topps Tiffany · full price guide →
Strong grading candidate — 62× premium in PSA 10
A PSA 10 Mark McGwire #690 sells for $345 against $5.55 raw: a $339 spread, 62× the ungraded price. A PSA 9 ($27.02) 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)
- $5.55
- PSA 10
- $345
- PSA 9
- $27.02
- Gem premium
- 62×
- 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 | $345 | +$314 | +$289 | +$189 |
| PSA 9 | $27.02 | −$3.53 | −$28.53 | −$129 |
| PSA 8 | $19.93 | −$10.62 | −$35.62 | −$136 |
Net = sale price − $5.55 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% | $106 | +$50.84 |
| 50% | $186 | +$130 |
| 75% | $265 | +$210 |
Break-even gem rate at the standard fee: about 9%. 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 | $448 | best | 55/45 | 70/30 |
| PSA 10 | $345 | −$104 | 55/45 | 75/25 |
| CGC 10 | $207 | −$241 | 55/45 | 75/25 |
| SGC 10 | $207 | −$241 | 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 | $345 | $207 | $448 | $207 | — |
| 9.5 | — | — | — | — | $86.12 |
| 9 | — | — | — | — | $27.02 |
| 8 | — | — | — | — | $19.93 |
| 7 | — | — | — | — | $4.50 |
Run your own numbers
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Grading Mark McGwire #690 — FAQ
Is Mark McGwire #690 worth grading?
A PSA 10 Mark McGwire #690 sells for $345 against $5.55 raw: a $339 spread, 62× the ungraded price. A PSA 9 ($27.02) 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 #690 worth compared with raw?
A PSA 10 Mark McGwire #690 (Baseball Cards 1990 Topps Tiffany) sells for about $345 versus $5.55 for a raw near-mint copy — a 62× premium as of Jul 11, 2026.
Which grading company is best for Mark McGwire #690?
By resale value, BGS 10 leads at $448, ahead of PSA 10 at $345. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Mark McGwire #690 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 #690 break even?
At a standard ~$50 fee, submitting Mark McGwire #690 breaks even when it gems about 9% of the time (a miss assumed to sell at the PSA 9 price of $27.02).
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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