Slabline™
Graded-card protection score
Slabline™All graded cards →What a SGC 5.5 is worth — from its recorded sales.
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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.
Sales seen on eBay, Fanatics Collect, Goldin, Heritage, Alt and MySlabs, via CardHedge. "Marketplace" is a real CardHedge sale whose venue is not identified yet.
A SGC 5.5 1969 Topps Nolan Ryan #553 is worth about $570, the median of its 5 most recent recorded SGC 5.5 sales. Slabline holds 52 recorded SGC 5.5 sales of this card between April 2022 and September 2026; the most recent sold for $675 on September 11, 2026. At other grades it is valued at about $1.74 (Raw / Ungraded), $17,608 (Gem Mint 10).
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How much the 1969 Topps Nolan Ryan #553 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 | $1.74 | guide, rescaled to sales |
| Gem Mint 10 | $17,608 | guide, rescaled to sales |
Price guide data: SportsCardsPro
Price checked 2 days ago · last recorded sale 2 months ago (SGC 5.5) · 2 sales in the last 90 days (all grades)
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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.