MidpointCard Centering Grading Portfolio App

Is John Gianelli #31 worth grading?

Basketball · Basketball Cards 1977 Topps · full price guide →

Strong grading candidate — 109× premium in PSA 10

A PSA 10 John Gianelli #31 sells for $196 against $1.80 raw: a $194 spread, 109× the ungraded price. A PSA 9 ($22.27) 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)
$1.80
PSA 10
$196
PSA 9
$22.27
Gem premium
109×
As of
Sep 3, 2026

Break-even by outcome and fee

John Gianelli #31: 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$196+$169+$144+$44.36
PSA 9$22.27−$4.53−$29.53−$130
PSA 8$1.25−$25.55−$50.55−$151

Net = sale price − $1.80 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?

John Gianelli #31: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$65.74+$13.94
50%$109+$57.42
75%$153+$101

Break-even gem rate at the standard fee: about 17%. 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 →
John Gianelli #31: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$255best55/4570/30
PSA 10$196−$58.8455/4575/25
CGC 10$118−$13755/4575/25
SGC 10$118−$13755/4575/25

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.

John Gianelli #31 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$196$118$255$118—
9.5————$65.81
9————$22.27
8————$1.25
7————$1.00

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 1977 Topps cards worth checking

Full set checklist →

Grading John Gianelli #31 — FAQ

Is John Gianelli #31 worth grading?

A PSA 10 John Gianelli #31 sells for $196 against $1.80 raw: a $194 spread, 109× the ungraded price. A PSA 9 ($22.27) 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 John Gianelli #31 worth compared with raw?

A PSA 10 John Gianelli #31 (Basketball Cards 1977 Topps) sells for about $196 versus $1.80 for a raw near-mint copy — a 109× premium as of Sep 3, 2026.

Which grading company is best for John Gianelli #31?

By resale value, BGS 10 leads at $255, ahead of PSA 10 at $196. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does John Gianelli #31 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 John Gianelli #31 break even?

At a standard ~$50 fee, submitting John Gianelli #31 breaks even when it gems about 17% of the time (a miss assumed to sell at the PSA 9 price of $22.27).

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