MidpointCard Centering Grading Portfolio App
Boston Bombers #29 (Basketball Cards 1983 Star) — is it worth grading?

Is Boston Bombers #29 worth grading?

Basketball · Basketball Cards 1983 Star · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Boston Bombers #29 sells for $1,235 against $17.42 raw: a $1,217 spread, 71× the ungraded price. Even a PSA 9 ($198) 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)
$17.42
PSA 10
$1,235
PSA 9
$198
Gem premium
71×
As of
Sep 4, 2026

Break-even by outcome and fee

Boston Bombers #29: 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$1,235+$1,192+$1,167+$1,067
PSA 9$198+$156+$131+$30.54
PSA 8$58.43+$16.01−$8.99−$109

Net = sale price − $17.42 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?

Boston Bombers #29: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$457+$390
50%$716+$649
75%$975+$908

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 →
Boston Bombers #29: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$1,605best55/4570/30
PSA 10$1,235−$37055/4575/25
CGC 10$741−$86455/4575/25
SGC 10$741−$86455/4575/25

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.

Boston Bombers #29 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$1,235$741$1,605$741—
9.5————$344
9————$198
8————$58.43
7————$34.99

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 1983 Star cards worth checking

Full set checklist →

Grading Boston Bombers #29 — FAQ

Is Boston Bombers #29 worth grading?

A PSA 10 Boston Bombers #29 sells for $1,235 against $17.42 raw: a $1,217 spread, 71× the ungraded price. Even a PSA 9 ($198) 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 Boston Bombers #29 worth compared with raw?

A PSA 10 Boston Bombers #29 (Basketball Cards 1983 Star) sells for about $1,235 versus $17.42 for a raw near-mint copy — a 71× premium as of Sep 4, 2026.

Which grading company is best for Boston Bombers #29?

By resale value, BGS 10 leads at $1,605, ahead of PSA 10 at $1,235. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Boston Bombers #29 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 basketball 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