Midpoint - Card Centering Tool

Is Cannonball #50 worth grading?

Marvel · Marvel 1993 Masterpieces · full price guide →

Strong grading candidate — 134× premium in PSA 10

A PSA 10 Cannonball #50 sells for $230 against $1.71 raw: a $228 spread, 134× the ungraded price. A PSA 9 ($17.72) 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)
$1.71
PSA 10
$230
PSA 9
$17.72
Gem premium
134×
As of
Aug 15, 2026

Break-even by outcome and fee

Cannonball #50: 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$230+$203+$178+$78.04
PSA 9$17.72−$8.99−$33.99−$134
PSA 8$6.05−$20.66−$45.66−$146

Net = sale price − $1.71 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?

Cannonball #50: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$70.73+$19.02
50%$124+$72.03
75%$177+$125

Break-even gem rate at the standard fee: about 16%. 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
Cannonball #50: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$299best55/4570/30
PSA 10$230−$69.2555/4575/25
CGC 10$138−$16155/4575/25
SGC 10$138−$16155/4575/25

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.

Cannonball #50 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$230$138$299$138
9.5$19.00
9$17.72
8$6.05
7$3.88

Run your own numbers

Should I pay this?

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

Other Marvel 1993 Masterpieces cards worth checking

Full set checklist

Grading Cannonball #50 — FAQ

Is Cannonball #50 worth grading?

A PSA 10 Cannonball #50 sells for $230 against $1.71 raw: a $228 spread, 134× the ungraded price. A PSA 9 ($17.72) 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 Cannonball #50 worth compared with raw?

A PSA 10 Cannonball #50 (Marvel 1993 Masterpieces) sells for about $230 versus $1.71 for a raw near-mint copy — a 134× premium as of Aug 15, 2026.

Which grading company is best for Cannonball #50?

By resale value, BGS 10 leads at $299, ahead of PSA 10 at $230. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Cannonball #50 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 Cannonball #50 break even?

At a standard ~$50 fee, submitting Cannonball #50 breaks even when it gems about 16% of the time (a miss assumed to sell at the PSA 9 price of $17.72).

Is your Marvel 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