Shohei Index
Shohei Index ResearchUpdated 2026-08-30

Refractors and the chrome ladder

The same identity rules our valuation engine enforces.

A refractor is a chromium card with a coating that splits light into a rainbow sheen when tilted. In a chrome set the unnumbered base card and the base refractor are the bottom of the parallel ladder — and, for pricing purposes, the most important rungs on it, because almost every other price is quoted relative to them.

The shape, and what varies

Colours and print runs change by year and product, and the number stamped on the card is always the authority. What stays constant is the shape: an unnumbered refractor at the bottom, then colour refractors at falling print runs, and a single one-of-one at the top.

RungWhat it isHow the market treats it
BaseUnnumbered, no refractor coatingThe liquid reference point
RefractorUnnumberedFirst step up; usually a modest premium
Colour refractorsNumbered, falling as the colours climbWhere premiums start to matter
The scarcest coloursSmall runs, often in the tensThin buyer pools; a single sale moves the price
Superfractor1/1No comp pool — see the one-of-ones page

The same colour is not the same print run

A colour name is a name, not a number. In one 2018 chrome set our catalog records a Purple on the base card and a Purple on the rookie autograph with different print runs — same product, same year, same word. Read the serial off the card before treating two “Purple” sales as one market.

Chrome refractor families beyond the colours

Modern chrome sets also print unnumbered pattern refractors — X-Fractor, Prism, Negative, Sepia and similar. They are separate parallels with separate markets, not grades of the base refractor, and our parser reads each of them as its own name so one cannot price another.

Why the base rung is the one to price first

The base rung is the only one with enough sales to support a confident number. Every scarcer rung has fewer buyers and fewer sales, so its price is noisier and more easily distorted by one motivated party. Establish the base first, then judge everything above it as a premium over base — that is the only comparison that stays stable as the whole market rises and falls.

The relative-value rule

Base $40 and the /499 at $55? The /499 is usually the better buy — real scarcity for a third more money. Base $40 and the /99 at $400? The premium has eaten the upside; the base is the value. Run your own numbers in the scarcity calculator.

Liquidity, the reason experienced buyers stay low

The cheapest rungs are not merely cheap — they are the ones that sell. A base card has a continuous market you can exit into; a card numbered to twenty-five may have one interested buyer this quarter. If you need to be able to sell, that difference belongs in the price you are willing to pay.

The full ladder reference, including which families here have no ladder at all, is on the parallels hub, and how a parallel feeds a valuation is in parallels and print runs.

Keep reading

The full ladder and the scarcity assumptions are on the parallels hub. To see a rung with live asks and sold evidence against one exact identity, open a card page.