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The Kon Knueppel (#GR-4, Topps Chrome, 2025) is a rare Basketball card. Across 1 ZeroPop community scans it averages a 9.5/10 grade (GEM MINT), with 100% grading Gem Mint 9.5 or higher.
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Real community scans of the Kon Knueppel, graded across the scale.
Whether a Kon Knueppel submission pays off depends on its raw value, its graded value, and the grade your copy would actually get. ZeroPop scans the card, predicts the grade, and runs the break-even math for you.
Community average: 9.5 (GEM MINT) · based on 1 ZeroPop scans
The Kon Knueppel from Topps Chrome has a live raw market value that moves with recent sales, and graded copies sell for more. Create a free ZeroPop account and start a 3-day Pro trial to see its current value, full price history, and the estimated price at every grade.
Across 1 community scans on ZeroPop, the Kon Knueppel averages a 9.5/10 overall grade. 100% reach Gem Mint (9.5+). Sub-grade averages: corners 9.5, edges 9.5, surface 9.5, centering 9.0.
Whether the Kon Knueppel is worth submitting depends on its raw value versus its graded value and your predicted grade. ZeroPop scans the card, predicts a PSA/BGS/CGC grade, and runs the break-even math before you pay submission fees.
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Photograph the front and the back and get all four sub-grades back in about a minute. No account needed to see the grade, and no credit card anywhere.
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