Is Martina Navratilova #4 worth grading?
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Strong grading candidate — 44× premium in PSA 10
A PSA 10 Martina Navratilova #4 sells for $277 against $6.27 raw: a $270 spread, 44× the ungraded price. A PSA 9 ($28.95) 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)
- $6.27
- PSA 10
- $277
- PSA 9
- $28.95
- Gem premium
- 44×
- 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 | $277 | +$245 | +$220 | +$120 |
| PSA 9 | $28.95 | −$2.32 | −$27.32 | −$127 |
| PSA 8 | $17.60 | −$13.67 | −$38.67 | −$139 |
Net = sale price − $6.27 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% | $90.88 | +$34.61 |
| 50% | $153 | +$96.55 |
| 75% | $215 | +$158 |
Break-even gem rate at the standard fee: about 11%. 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 | $360 | best | 55/45 | 70/30 |
| PSA 10 | $277 | −$83.31 | 55/45 | 75/25 |
| CGC 10 | $166 | −$194 | 55/45 | 75/25 |
| SGC 10 | $166 | −$194 | 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 | $277 | $166 | $360 | $166 | — |
| 9.5 | — | — | — | — | $86.51 |
| 9 | — | — | — | — | $28.95 |
| 8 | — | — | — | — | $17.60 |
Run your own numbers
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Grading Martina Navratilova #4 — FAQ
Is Martina Navratilova #4 worth grading?
A PSA 10 Martina Navratilova #4 sells for $277 against $6.27 raw: a $270 spread, 44× the ungraded price. A PSA 9 ($28.95) 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 Martina Navratilova #4 worth compared with raw?
A PSA 10 Martina Navratilova #4 (Tennis Cards 1991 NetPro Tour Stars) sells for about $277 versus $6.27 for a raw near-mint copy — a 44× premium as of Jul 11, 2026.
Which grading company is best for Martina Navratilova #4?
By resale value, BGS 10 leads at $360, ahead of PSA 10 at $277. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Martina Navratilova #4 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 Martina Navratilova #4 break even?
At a standard ~$50 fee, submitting Martina Navratilova #4 breaks even when it gems about 11% of the time (a miss assumed to sell at the PSA 9 price of $28.95).
Is your tennis 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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