Kon Knueppel 1/1 SuperFractor Rookie Sells for $16K

2025-26 Topps Chrome Rock Stars SuperFractor #RS-19 Kon Knueppel Rookie Card (#1/1) - PSA 9 Sells for $16,470

Kon Knueppel’s early high-end market got a clear signal on May 1, 2026, when a key centerpiece changed hands at Goldin:

2025-26 Topps Chrome Rock Stars SuperFractor #RS-19 Kon Knueppel Rookie (#1/1) – PSA MINT 9

Hammer price: $16,470 (Goldin, May 1, 2026, UTC)

For a modern basketball prospect, this is one of the most important possible single cards you can have: a true 1-of-1 SuperFractor rookie from a chromium set, in a strong PSA 9 grade.

Card snapshot

Player: Kon Knueppel
Team: (College/early-career context – pre-established NBA “flagship” status)
Year: 2025-26
Set: Topps Chrome Rock Stars
Card number: #RS-19
Parallel: SuperFractor (gold, spiral-etched 1-of-1 finish)
Serial numbering: #1/1 (the only copy produced)
Designation: Rookie card within the Rock Stars insert line
Grading company: PSA (Professional Sports Authenticator)
Grade: PSA MINT 9
Attributes: Non-auto, non-memorabilia, but the top-tier parallel of this insert in the product

In today’s ultra-modern era, SuperFractors are understood by collectors as the top of the chromium food chain. They are the card that player collectors and prospectors usually chase first when a new product goes live.

Why this card matters to collectors

1. SuperFractor + rookie = apex chase

In chrome-based sets, a SuperFractor is typically the most premium parallel: one copy, gold tone, and a distinctive spiral or circular pattern. A #1/1 rookie from that parallel is effectively the “keystone” card for anyone building a Kon Knueppel PC (personal collection).

Even though this card is an insert (Rock Stars) rather than a base rookie, it still functions as a key rookie-year issue. In recent years, collectors have increasingly treated major chromium inserts and their top parallels as core parts of a player’s rookie portfolio.

2. Ultra-modern, but still truly scarce

This card sits in the ultra-modern era: high-production years with lots of parallels, color, and configurations. That usually means more supply at the low and mid tiers.

However, 1-of-1s like this override that general abundance. Regardless of how much 2025-26 Topps Chrome Rock Stars is printed overall, there is only one SuperFractor #RS-19. For deep-pocketed Knueppel collectors or long-term believers, this becomes a target that might only come to market a few times over a decade.

3. A notable result for a non-auto, non-patch 1/1

In modern basketball, the highest-dollar rookies are often on-card autograph or patch autograph cards. This sale is notable because it shows meaningful demand for a non-auto, non-memorabilia 1/1 that is driven purely by:

Player belief
Parallel status (SuperFractor)
Rookie-year timing
Brand equity in chromium Topps products

That’s useful context for collectors deciding how to prioritize between autos, patches, and pure parallel plays.

Market context and pricing

The sale: $16,470 at Goldin (May 1, 2026)

Converted from the recorded cents amount, this auction closed at $16,470. Goldin is one of the major high-end auction houses, so their results often serve as informal reference points for “what the market was willing to pay” at a given moment.

Comps and related cards

For a unique 1-of-1 like this, there is no direct 1:1 comparison. Instead, collectors usually look at:

Lower parallels from the same insert
- Gold /50, Orange /25, Red /5, or standard refractors
Other key Knueppel rookies in the same product line
- Base Chrome rookies and their color parallels
- Any early autograph issues
Comparable modern prospects’ SuperFractors
- Especially from recent Topps Chrome basketball or similar chromium releases

As of now, public, repeatable sales data for this exact card is inherently limited—this is its first known major-auction appearance and it can’t be duplicated. That means price context comes mainly from:

How Knueppel’s other rookies are trending
How collectors have treated similar-level SuperFractors for other young talents

Is $16,470 high, low, or typical?

Because there is only one copy and limited public sales history for this exact card, it’s more accurate to see this result as a current market snapshot rather than a strict benchmark.

Some guiding points for interpretation:

For a prospect or early-career player, five-figure pricing on a non-auto 1/1 SuperFractor is a sign of real confidence from at least two bidders.
The fact that it surfaced at Goldin suggests it was positioned to reach serious player collectors and investors, not just casual buyers.
Future sales (if the card reappears) will give better clarity on whether this was an aggressive early bid or a stable market level.

In other words, this sale says less about a “true value” and more about what the most motivated buyers were willing to do at this point in Knueppel’s career.

Player and hobby factors that can influence this card

When collectors look at a card like this, they usually weigh several layers:

Player trajectory
- Playing time, production, efficiency, and on-court impact.
- Awards, draft position, and how the broader basketball community talks about him.
Hobby narrative
- Is Knueppel developing a strong collector base?
- Are his early autos, numbered rookies, and low-pop (low population) graded cards being chased consistently?
Set and brand strength
- Topps Chrome-style products are deeply established in the hobby, with collectors accustomed to chasing refractors, color, and SuperFractors.
- The Rock Stars insert line adds a thematic layer for set builders and insert specialists.

Any combination of strong on-court performance and growing hobby popularity can keep attention on cards like this. At the same time, collectors should remember that modern prospects are volatile in both performance and card prices.

Grading: PSA 9 and why it matters

PSA uses a 1–10 scale, with 10 = GEM MINT and 9 = MINT.

For an ultra-modern chromium 1/1:

A PSA 9 is a strong grade and keeps the card in true high-end territory.
With only one copy in existence, a PSA 9 essentially becomes the top of the population report by default unless the card is ever cracked and resubmitted.
Many collectors are comfortable treating a clean PSA 9 on a 1/1 as effectively the premium standard, especially when centering and surface look strong.

Because there is no PSA 10 to compete with (and might never be), the market tends to judge the card primarily on eye appeal and scarcity, not on the 9 vs. 10 distinction.

Takeaways for collectors and small sellers

For hobbyists watching the modern basketball space, this Goldin sale reinforces a few practical lessons:

True 1-of-1s still command attention.
Even with a crowded parallel landscape, a SuperFractor rookie remains one of the most chased single cards of a player’s entire career.
Non-autograph parallels can stand on their own.
While autos and patch autos often grab headlines, this result shows that clean, non-auto 1/1s in established chromium brands can still reach five figures when the player has a following.
Auction venues shape visibility.
High-end houses like Goldin gather many of the most motivated bidders in one place, which can help set a public reference point for rare cards.
Context beats any single comp.
For one-of-one cards, looking at the broader ecosystem—other parallels, similar players, and general sentiment—often tells you more than trying to force a precise dollar comparison.

How this fits into the broader Kon Knueppel market

This sale will likely be referenced in future discussions of Knueppel’s top-tier cardboard:

It establishes that at least one major Knueppel piece can live in the mid five-figure range.
It gives both buyers and sellers a concrete example to point to when evaluating other scarce rookies (Gold /50, Red /5, or early autos).
It signals that collectors are already willing to pay up for premium Kon Knueppel pieces, even at a relatively early stage of his career arc.

Going forward, collectors will watch:

How Knueppel performs season to season
Whether his other rare rookies achieve similar bidding intensity
If and when this specific SuperFractor resurfaces at auction or via private sale

For now, the 2025-26 Topps Chrome Rock Stars SuperFractor #RS-19 Kon Knueppel Rookie #1/1, PSA 9 stands as one of the defining early cards for a player whose story—and market—are still being written.

figoca takeaway

If you’re tracking Kon Knueppel’s market or building a focused modern basketball collection, this Goldin sale on May 1, 2026 is a useful data point: a clean, graded, non-auto SuperFractor rookie achieving $16,470 in a major auction environment. For one-of-one cards, that kind of public result is rare—and worth bookmarking for future price context, even if it never repeats exactly.