What does '23/99' mean on a card?

The card is one of 99 total produced of that specific parallel/variant, and it is the 23rd card stamped within that run. Manufacturers commit to producing exactly 99 — no more, no less.

Are jersey-numbered cards (e.g., 23/99 for Jordan) worth more?

Often yes, especially for high-profile players where the jersey number matches. A LeBron James card numbered 23/99 typically commands a premium over the same card numbered 47/99 because collectors value the jersey-match specifically.

What's the rarest serial-numbered card type?

A 1/1 — the only one ever produced of that specific parallel. SuperFractors, Black Refractors, and many top-tier autograph patches are 1/1. They are the apex of modern card scarcity and frequently the most valuable variants of any release.

Serial-Numbered Card

A serial-numbered card is stamped with its position within a known print run — for example 23/99 means card 23 of 99 produced. Numbering is the primary scarcity signal in modern trading cards.

ByAndrew Koski· Founder & EditorFounder, SuperCatch

Last Reviewed April 25, 2026 · Published April 25, 2026

A serial-numbered card carries a stamped or printed indicator of its position within a documented print run. The stamp typically appears on the back of the card or as foil text on the front and follows the format 'X/Y' where X is the card's individual number and Y is the total quantity produced. A card numbered 23/99 means card number 23 of 99 total cards produced of that specific parallel. Serial numbering is the modern industry's primary scarcity guarantee. Manufacturers commit to producing exactly the stamped number — a 1/1 (one of one) print run is the rarest possible variant, often used for SuperFractor rookies, Black Refractor parallels, and one-off autographs. Lower numbers in a run (1/X, X/X, or jersey numbers like 23/99 for Michael Jordan) frequently command meaningful premiums over middle numbers because of collector preference. Not all parallels are serial-numbered.…Read more

Many base parallels (Silver Prizm, base Refractor) print at undisclosed quantities. The presence of an explicit X/Y stamp distinguishes a true serial-numbered card from a generic parallel and provides the contractual scarcity collectors price against.

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