MidpointCard Centering Grading Portfolio App
Bob Gibson #24 (Baseball Cards 1971 Topps Greatest Moments) — is it worth grading?

Is Bob Gibson #24 worth grading?

Baseball · Baseball Cards 1971 Topps Greatest Moments · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Bob Gibson #24 sells for $12,964 against $173 raw: a $12,791 spread, 75× the ungraded price. Even a PSA 9 ($1,974) 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)
$173
PSA 10
$12,964
PSA 9
$1,974
Gem premium
75×
As of
Sep 4, 2026

Break-even by outcome and fee

Bob Gibson #24: 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$12,964+$12,766+$12,741+$12,641
PSA 9$1,974+$1,777+$1,752+$1,652
PSA 8$735+$538+$513+$413

Net = sale price − $173 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?

Bob Gibson #24: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$4,722+$4,499
50%$7,469+$7,246
75%$10,216+$9,994

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 →
Bob Gibson #24: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$16,853best55/4570/30
PSA 10$12,964−$3,88955/4575/25
CGC 10$7,778−$9,07555/4575/25
SGC 10$7,778−$9,07555/4575/25

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.

Bob Gibson #24 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$12,964$7,778$16,853$7,778—
9.5————$3,519
9————$1,974
8————$735
7————$412

Swipe the table for the other grading companies →

Run your own numbers

Should I pay this?

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

Other 1971 Topps Greatest Moments cards worth checking

Full set checklist →

Grading Bob Gibson #24 — FAQ

Is Bob Gibson #24 worth grading?

A PSA 10 Bob Gibson #24 sells for $12,964 against $173 raw: a $12,791 spread, 75× the ungraded price. Even a PSA 9 ($1,974) 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 Bob Gibson #24 worth compared with raw?

A PSA 10 Bob Gibson #24 (Baseball Cards 1971 Topps Greatest Moments) sells for about $12,964 versus $173 for a raw near-mint copy — a 75× premium as of Sep 4, 2026.

Which grading company is best for Bob Gibson #24?

By resale value, BGS 10 leads at $16,853, ahead of PSA 10 at $12,964. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Bob Gibson #24 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.

Best on iPhone & Android

Check your baseball card in the Midpoint app

Scan with your camera to measure centering to the millimeter, get an AI grade with corner and edge close-ups, see what your copy is worth, and track it in your portfolio. Free to start.

Download on the App StoreGet it on Google Play

Or try it on the web →

Best on iPhone & Android

The full Midpoint experience is in the app

Scan with your camera, get AI grades with corner and edge close-ups, issue Grade Certificates, set price alerts, track your portfolio and talk to other collectors — everything here, plus the parts a browser can't do. Free to start.

Download on the App StoreGet it on Google Play