Midpoint - Card Centering Tool

Is Ken Harrelson #510 worth grading?

Baseball · Baseball Cards 1971 Topps · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Ken Harrelson #510 sells for $359 against $2.74 raw: a $357 spread, 131× the ungraded price. Even a PSA 9 ($334) 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)
$2.74
PSA 10
$359
PSA 9
$334
Gem premium
131×
As of
Jul 11, 2026

Break-even by outcome and fee

Ken Harrelson #510: 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$359+$332+$307+$207
PSA 9$334+$306+$281+$181
PSA 8$24.84−$2.90−$27.90−$128

Net = sale price − $2.74 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?

Ken Harrelson #510: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$340+$288
50%$347+$294
75%$353+$300

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
Ken Harrelson #510: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$467best55/4570/30
PSA 10$359−$10855/4575/25
CGC 10$216−$25155/4575/25
SGC 10$216−$25155/4575/25

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.

Ken Harrelson #510 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$359$216$467$216
9.5$352
9$334
8$24.84
7$16.50

Run your own numbers

Should I pay this?

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

Other 1971 Topps cards worth checking

Full set checklist

Grading Ken Harrelson #510 — FAQ

Is Ken Harrelson #510 worth grading?

A PSA 10 Ken Harrelson #510 sells for $359 against $2.74 raw: a $357 spread, 131× the ungraded price. Even a PSA 9 ($334) 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 Ken Harrelson #510 worth compared with raw?

A PSA 10 Ken Harrelson #510 (Baseball Cards 1971 Topps) sells for about $359 versus $2.74 for a raw near-mint copy — a 131× premium as of Jul 11, 2026.

Which grading company is best for Ken Harrelson #510?

By resale value, BGS 10 leads at $467, ahead of PSA 10 at $359. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Ken Harrelson #510 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