Superfractor
A Superfractor is a one-of-one refractor parallel, the rarest refractor variant, that usually has a gold spiral background and appears in Topps Chrome and Bowman Chrome checklists.
In more detail
Wikipedia's article on refractor cards calls the SuperFractor the rarest refractor variant: a card with a production run of one, numbered 1/1, usually with a gold spiral design behind the player. It also notes variants of the SuperFractor itself, such as white and bordered versions.
Checklist guides list it last among the colors. Checklist Insider's 2026 Topps Chrome Baseball guide runs from numbered colors such as Gold Refractor to 50 and Red Refractor to 5 up to the SuperFractor 1/1, and its 2026 Bowman Chrome guide ends the prospect parallel list the same way.
Each Superfractor has a production run of one, so a listing should name the product, the year and the card number, and a buyer can match them to the checklist.
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