What is the Slabline Score?

The Slabline Score is a credit-style 0–1000 protection score for a graded trading-card collection, blended from five weighted factors: Insurance (35%), Concentration (25%), Storage (20%), Liquidity (10%), and Provenance (10%). Higher is better; bands run A (≥880) to F (<400).

How does Slabline value my graded cards?

Each card is valued from recent comparable sales for the exact graded card (by certification number and grade), aggregated across eBay, Heritage, Goldin, and PWCC. More comps yield a tighter, higher-confidence value.

Does Slabline sell insurance?

No. Slabline is software that produces broker-ready insurance schedules and risk reports. It is not an insurer, broker, or appraiser and does not provide insurance, financial, or legal advice.

Which cards and categories does Slabline support?

Graded slabs from PSA, BGS, SGC, and CGC across baseball, basketball, football, soccer, Formula 1 / racing, hockey, Pokémon, and Magic.

How much does Slabline cost?

There is a free Ledger tier for up to 25 cards. Collector is $99/year (or $9.99/month) and removes the card limit for an unlimited collection. Insured is $149/year (or $14.99/month) and adds broker-ready insurance schedules and a weekly intelligence brief. A Vaulted tier adds connected Hobby Smart Case hardware.

What is the Hobby Smart Case?

A connected travel case (Travel 40, 75, and Pro) with per-slot temperature, humidity, light, and tamper monitoring, plus GPS location and a chain-of-custody log — turning storage risk into live, sensor-verified data. Launching Q2 2027.

How much is a PSA 8 1935 R331 National Chicle Football Chester Johnston #32 worth?

A PSA 8 1935 R331 National Chicle Football Chester Johnston #32 is worth approximately $3,600, the price-guide estimate for this grade. Card values fluctuate with the market.

What's the difference between a Grade 9 and a Gem Mint 10 Chester Johnston?

For the 1935 R331 National Chicle Football Chester Johnston #32, a Grade 9 is worth about $6,789 while a Gem Mint 10 is about $19,800 — the grade gap is roughly $13,011.

How does Slabline value the Chester Johnston card?

Slabline starts from the price guides for the card and grade. When it holds dated recorded sales of that exact card and grade — from CardHedge market data and the auction houses it ingests — the headline becomes the median of the most recent ones and the grade ladder rescales to match. Each row on the page names which of those it is.

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1935 R331 National Chicle Football Chester Johnston #32

Q: How does Slabline value my graded cards?

Each card is valued from recent comparable sales for the exact graded card (by certification number and grade), aggregated across eBay, Heritage, Goldin, and PWCC. More comps yield a tighter, higher-confidence value.

Q: Does Slabline sell insurance?

No. Slabline is software that produces broker-ready insurance schedules and risk reports. It is not an insurer, broker, or appraiser and does not provide insurance, financial, or legal advice.

Q: Which cards and categories does Slabline support?

Graded slabs from PSA, BGS, SGC, and CGC across baseball, basketball, football, soccer, Formula 1 / racing, hockey, Pokémon, and Magic.

Q: How much does Slabline cost?

There is a free Ledger tier for up to 25 cards. Collector is $99/year (or $9.99/month) and removes the card limit for an unlimited collection. Insured is $149/year (or $14.99/month) and adds broker-ready insurance schedules and a weekly intelligence brief. A Vaulted tier adds connected Hobby Smart Case hardware.

Q: What is the Hobby Smart Case?

A connected travel case (Travel 40, 75, and Pro) with per-slot temperature, humidity, light, and tamper monitoring, plus GPS location and a chain-of-custody log — turning storage risk into live, sensor-verified data. Launching Q2 2027.

What a PSA 8 is worth — price-guide estimate, with every recorded sale we hold.

Estimated value · PSA 8

$3,600

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Estimated · no recorded PSA 8 sales — this grade rarely trades publicly, so the figure is derived from nearby grades, not a direct sale.

7recorded sales

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1935 R331 National Chicle Football checklist→Football market index-1.0% 1W

Recorded sales · all grades

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ⓘ Where these sales come from

eBay, Fanatics Collect, Alt, MySlabs, Goldin and Heritage records arrive through CardHedge's licensed feed; REA, SCP and Huggins & Scott are read from each house's published prices realized. More eBay, Goldin and auction sales come from The Card API.

Sales seen on eBay, Fanatics Collect, Goldin, Heritage, Alt and MySlabs, via CardHedge. "Marketplace · house pending" is a real CardHedge sale whose house is not matched yet.

No recorded PSA 8 sales — this grade rarely trades publicly. Showing PSA 6, the nearest grade with recorded sales.

Not enough sales to chart yet.

Sep 18, 2026 · Marketplace · house pending · PSA 6$5,002

Value by grade

How much the 1935 R331 National Chicle Football Chester Johnston #32 is worth at each grade.

How to read this page: an estimate is Slabline's figure for a grade, built from the source named beside it. An observed price is the latest price a grader's copy of this card fetched, one cell per grader and grade in the grid below. A recorded sale is a dated transaction with its venue. The headline above is the estimate for this slab's own grade.

Grade	Value	Built from
Raw / Ungraded	$995est.	estimate
Grade 7	$1,169est.	estimate
Grade 8	$3,600est.	estimate
Grade 9	$6,789est.	estimate
Grade 9.5	$13,200est.	estimate
Gem Mint 10	$19,800est.	estimate

Price guide data: SportsCardsPro

Estimated from this category's observed grade curve and this card's known value — no per-grade sales recorded yet. Estimates, not observed prices.

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Tracked history · PSA 8

Price checked today · last recorded sale 23 days ago (PSA 6) · 1 sale in the last 90 days

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Frequently asked

How much is a PSA 8 1935 R331 National Chicle Football Chester Johnston #32 worth?: A PSA 8 1935 R331 National Chicle Football Chester Johnston #32 is worth approximately $3,600, the price-guide estimate for this grade. Card values fluctuate with the market.
What's the difference between a Grade 9 and a Gem Mint 10 Chester Johnston?: For the 1935 R331 National Chicle Football Chester Johnston #32, a Grade 9 is worth about $6,789 while a Gem Mint 10 is about $19,800 — the grade gap is roughly $13,011.
How does Slabline value the Chester Johnston card?: Slabline starts from the price guides for the card and grade. When it holds dated recorded sales of that exact card and grade — from CardHedge market data and the auction houses it ingests — the headline becomes the median of the most recent ones and the grade ladder rescales to match. Each row on the page names which of those it is.

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Values are informational estimates built from recent comparable sales — not a certified appraisal, insurance, or financial advice. Card values fluctuate; figures are a snapshot and may differ from a realized sale.