There are 1 Knuckleball trading cards tracked on HobbyCardIndex, spanning Baseball. The most valuable is the Knuckleball #10 at $16.50 raw.

Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/knuckleball

Knuckleball Cards

1 cards · Baseball

All Knuckleball Cards

Knuckleball #10

1974
$16.50

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