A gold, checkered Topps Chrome card with "1/1" stamped on it just sold for $878,400. The 2025 Topps Chrome F1 Chrome Autographs SuperFractor Kimi Antonelli, PSA 10, closed at Goldin on October 18 after 34 bids. If you've seen "SuperFractor" on a listing and wondered why it moves the price that much, this is the field guide. Signals, not appraisals.
What "SuperFractor" means on the slab
A SuperFractor is a Topps Chrome parallel with a gold, patterned refractor finish (you can see it on both slabs in this post) and a print run of one. Goldin's lot description calls it a "single-copy print run" with "Topps' patented SuperFractor design," and the card is serial-numbered "1/1." In plain terms, every player in a set can have exactly one, and nobody else will ever own a second copy of that card.
That's different from a short print or a low-numbered parallel like /5 or /10. Those are scarce. A 1/1 is singular.
How to read a SuperFractor slab, line by line
| Slab line (Antonelli example) | What it tells you |
|---|---|
| 2025 TOPPS CHROME · #CAC-ANT | Year, product and card number. "CAC" lines up with the Chrome Autographs insert named in the lot title. |
| KIMI ANTONELLI | The subject. |
| CHROME AU-SUPERFRACTOR 1/1 | "AU" = on-card autograph version; "SUPERFRACTOR 1/1" = the parallel and its print run. |
| GEM MT 10 | PSA's condition grade for the card. |
| 149549417 | The PSA cert. Run it on PSA Verify before you trust anything else on the listing. |
Compare a non-auto example: the 2020 Topps Chrome F1 SuperFractor #1 Lewis Hamilton label reads just "SUPERFRACTOR 1/1" with a PSA NM 7 grade. It still brought $900,000 at Goldin in April 2022.
Why a 1/1 has no comps (and what to use instead)
A comp is a recent sale of the same card in the same grade. A 1/1 can only ever have sold as itself, so the usual "last three sales" method doesn't exist. Collectors fall back on proxies:
- Earlier sales of the same 1/1, if it has traded before.
- Other 1/1s of the same player (other SuperFractors, other one-of-one parallels).
- The next tier down of the same card: the /5, /10 or /50 parallels.
- Live auction momentum. The Antonelli lot sat at $270,000 ($329,400 with premium) in early October, per Men's Journal, and closed at $878,400. A mid-auction bid is a current ask, not a result.
AOM signal: On a 1/1, the final hammer is the only hard number. Treat everything before it, including your own estimate, as a signal to research.
Auto vs. non-auto, and why grade still matters
The autograph version (AU) adds a second scarcity layer: one copy, signed. On the two SuperFractors in this post, the signed Antonelli in a PSA 10 and the unsigned Hamilton in a PSA 7 landed about $21,600 apart. Different drivers, different years, so it isn't a like-for-like comp. It does show that grade and autograph each carry weight even when the print run is one.
Verify before you buy: SuperFractor checklist
- Cert first. Look up the cert on PSA Verify and match the label text, grade and card number to the listing photos.
- Serial stamp. The card itself should carry the "1/1" serial. A label that says 1/1 on a card with no stamp is a red flag.
- Pattern check. Compare the gold pattern and border against known examples from the same product year.
- Autograph statement. For AU versions, the manufacturer's authenticity statement should be on the card (Goldin notes it on the Antonelli).
- Provenance. Ask where it's traded before. 1/1s tend to leave a public trail through auction houses.
- Comp honestly. Use the proxies above and say so. Don't treat a live bid or an asking price as a sold price.
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Signal, not an appraisal. Sale figures from Goldin lot pages (buyer's premium included) and Men's Journal; verify live before buying or selling.
