Slabline™
Graded-card protection score
Slabline™All graded cards →What a PSA 8 is worth — price-guide estimate, with every recorded sale we hold.
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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.
Prices realized at REA, SCP Auctions and Huggins & Scott, read from their public archives. Each lot carries its own grade.
A PSA 8 1957 Topps John Unitas #138 is worth about $205, the median of its 3 most recent recorded PSA 8 sales. Slabline holds 4 recorded PSA 8 sales of this card between April 2010 and July 2026; the most recent sold for $1,200 on July 19, 2026. At other grades it is valued at about $425 (Raw / Ungraded), $1,047 (Gem Mint 10).
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How much the 1957 Topps John Unitas #138 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 | $425 | 4 recorded raw sales |
| Grade 7 | — | out of line with recorded salesguide, rescaled to sales said $57 |
| Grade 8 | $205 | recorded sales |
| Grade 9 | — | out of line with recorded salesguide, rescaled to sales said $225 |
| Grade 9.5 | — | out of line with recorded salesguide, rescaled to sales said $286 |
| Gem Mint 10 | $1,047 | guide, rescaled to sales |
Price guide data: SportsCardsPro
Price checked today · last recorded sale 4 months ago at eBay (PSA 8) · 28 sales in the last 90 days (all grades)
A dealer typically pays about 60% of market for a fast, guaranteed sale — the rest is the liquidity gap. An auction or private sale can recover more but takes time and fees. It’s why your Slabline Score weighs liquidity — and why insuring at market matters: a fire-sale recovers far less than the number you’re covered for.
Estimated from dealer buy-vs-sell spreads; actual offers vary by condition and demand.
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If you own this $205 card: a standard homeowners policy typically pays a few hundred dollars for stolen collectibles — and nothing at all for flood.
See what you'd actually get back →Prefilled with $205 · 20 seconds · no account
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Add to my collection — free →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.