Midpoint - Card Centering Tool
Marty Marion #40 (Baseball Cards 1948 Bowman) — is it worth grading?

Is Marty Marion #40 worth grading?

Baseball · Baseball Cards 1948 Bowman · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Marty Marion #40 sells for $5,533 against $23.15 raw: a $5,510 spread, 239× the ungraded price. Even a PSA 9 ($2,031) 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)
$23.15
PSA 10
$5,533
PSA 9
$2,031
Gem premium
239×
As of
Jul 11, 2026

Break-even by outcome and fee

Marty Marion #40: net result of grading versus selling raw, by outcome and fee tier
If it comes back…Sells forEconomy / bulk (~$25.00)Standard (~$50.00)Express (~$150)
Gem — PSA 10$5,533+$5,485+$5,460+$5,360
PSA 9$2,031+$1,983+$1,958+$1,858
PSA 8$790+$742+$717+$617

Net = sale price − $23.15 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?

Marty Marion #40: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$2,906+$2,833
50%$3,782+$3,709
75%$4,657+$4,584

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
Marty Marion #40: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$7,192best55/4570/30
PSA 10$5,533−$1,65955/4575/25
CGC 10$3,320−$3,87255/4575/25
SGC 10$3,320−$3,87255/4575/25

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.

Marty Marion #40 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$5,533$3,320$7,192$3,320
9.5$2,234
9$2,031
8$790
7$346

Run your own numbers

Should I pay this?

Enter the seller’s asking price to see your net outcome per grade.

Other 1948 Bowman cards worth checking

Full set checklist

Grading Marty Marion #40 — FAQ

Is Marty Marion #40 worth grading?

A PSA 10 Marty Marion #40 sells for $5,533 against $23.15 raw: a $5,510 spread, 239× the ungraded price. Even a PSA 9 ($2,031) 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 Marty Marion #40 worth compared with raw?

A PSA 10 Marty Marion #40 (Baseball Cards 1948 Bowman) sells for about $5,533 versus $23.15 for a raw near-mint copy — a 239× premium as of Jul 11, 2026.

Which grading company is best for Marty Marion #40?

By resale value, BGS 10 leads at $7,192, ahead of PSA 10 at $5,533. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Marty Marion #40 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.

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.

Check my card free