2025-26 Finest Base Set Kon Knueppel Purple X-Fractor #4
2026
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$35.00est. value (ungraded)
Prices updated 2026-10-25
Based on recorded sold prices how we price cards
Card number
#4
Year
2026
Parallel / variant
Purple X-Fractor
Kon Knueppel price history
$308▲ 0.0%
Oct 24 · $308 low$308 high · Oct 25
PSA 10 market value, one reading a day. One-day spikes that reverse the next day are left out.
Price by month
Average price of the 2025-26 Finest Base Set Kon Knueppel Purple X-Fractor #4 each month, from 1 recorded price reading. Prices are re-checked regularly; a month's average counts each day from that month's first reading at the price that held that day.
Recorded high
$35.00
Recorded low
$35.00
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $35.00 | — |
Kon Knueppel prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $35.00 | Buy on eBay ↗ |
| PSA 8 | $41.35 | Buy on eBay ↗ |
| PSA 9 | $76.94 | Buy on eBay ↗ |
| Grade 9.5 | $159.30 | Buy on eBay ↗ |
| PSA 10 | $308.12 | Buy on eBay ↗ |
| BGS 10 | $401.00 | Buy on eBay ↗ |
| CGC 10 | $123.00 | Buy on eBay ↗ |
| SGC 10 | $185.00 | Buy on eBay ↗ |
Other versions of this Kon Knueppel card
17 versions, each priced on its own. Most valuable first.
Blue Geometric Refractor
$80.50
Not enough history yet
Raw $80.50PSA 9 $120PSA 10 $355Checked 2026-10-25
Purple Geometric Refractor
$59.64
Not enough history yet
Raw $59.64PSA 9 $99.07PSA 10 $279Checked 2026-10-25
Live on eBay
Affiliate — we may earn a commission2025-26 Finest Base Set Kon Knueppel Purple X-Fractor #4 value & prices
The 2025-26 Finest Base Set Kon Knueppel Purple X-Fractor #4 is a Basketball card (Purple X-Fractor parallel) released in 2026. Ungraded copies carry a market value of about $35.00.
An ungraded copy is worth around $35.00, a PSA 9 around $76.94, a PSA 10 (Gem Mint) around $308.12 and a pristine BGS 10 around $401.00. That's roughly a 8.8× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.
Is it worth grading?
With raw copies near $35.00 and top grades reaching $308.12, grading a sharp copy of this card can clearly pay for itself — the spread comfortably covers a typical ~$25.00 grading fee. The catch: only submit copies with strong centering, clean corners, and unmarked surfaces, because anything below a 9 usually erases the math.
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