The JW50 Index is an equal-weighted aggregate of the 50 cards catalogued in the Junk Wax Museum, published as a running market read on the 1984 to 1993 era. Think of it as an S&P 500 for junk wax: a small, curated basket that tracks how a specific slice of cardboard moves.

Four values are published in parallel, one per condition tier: raw, PSA 8, PSA 9, and PSA 10. Each value uses the same 50 constituents and the same weighting method, which lets you read the spread between raw and slabbed prices at a glance. When raw runs ahead of PSA 10, buyers are chasing the story. When PSA 10 pulls away, capital is flowing into condition scarcity.

This is not a portfolio and it is not a price guide. It is a fixed basket that reflects the museum's editorial view of which junk-wax cards actually matter, valued at consistent grades, so the index moves for one reason: prices moved.

Three cards are deliberately excluded from the JW50 and therefore from the JW50 Index. One arrived before the junk-wax era and two arrived after it. All three are important cards in their own right; none fit the specific decade the JW50 measures.

The 1986 Fleer Jordan (pre-era). The 1986-87 Fleer Basketball set is universally treated by the hobby as scarce vintage, not junk wax. Print runs were modest, Fleer had just reclaimed the NBA license, and demand for basketball wax in 1986 was thin enough that most of what was printed was quietly consumed rather than saved. That is the opposite of what the junk-wax label describes. Basketball's actual junk-wax era begins in 1989, when NBA Hoops arrived with mass-production levels that already defined baseball wax. The 1986 Fleer Jordan predates it by three years and trades at price levels an order of magnitude above every other card from the surrounding years.

The 1993 SP Derek Jeter #279 and the 1993 Topps Finest Griffey Refractor #110 (post-era). These two cards close the era together. SP defined the premium foilboard set format: thin foilboard cardstock, premium pricing, and condition-scarcity chase economics arriving as a mainstream product. Topps Finest defined the parallel-chase mechanic: the color-shifting refractor pulled at 1:9 packs, the first meaningful serialized parallel in modern trading cards. Every foilboard premium set and every rainbow parallel the industry has produced since 1994 descends from one or both of those inventions. Both cards are physically dated 1993, but their economics belong to the insert era that followed, not to the mass-produced flagship rookie tier the JW50 documents. The Jeter slot in Baseball Icons goes to the 1993 Topps #98, the last flagship mass-produced Jeter rookie on standard cardstock. The Griffey slot is fully occupied by the 1989 Upper Deck #1 flagship and the Griffey Phenomenon subwing that surrounds it.

Including any of the three would swing the index around a single outlier and misrepresent the era the index exists to measure. Excluding all three keeps the basket honest. The 1991 Upper Deck SP1 remains the Jordan flagship inside the JW50's junk-wax scope, the 1993 Topps #98 is the Jeter flagship, and the 1989 Upper Deck #1 is the Griffey flagship. The SP Jeter is documented as an honorable mention on the Topps Jeter page. The Finest Refractor's exclusion story lives on the methodology page, with inbound traffic to the retired card URL redirecting there so the reasoning stays discoverable.