There are 2 Joe Gans trading cards tracked on HobbyCardIndex, spanning Boxing. The most valuable is the Joe Gans #50 at $79.99 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/joe-gansJoe Gans Cards
2 cards · Boxing
There are 2 Joe Gans trading cards tracked on HobbyCardIndex, spanning Boxing. The most valuable is the Joe Gans #50 at $79.99 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/joe-gans