There are 2 James Braddock trading cards tracked on HobbyCardIndex, spanning Boxing. The most valuable is the James Braddock #14 at $9.50 raw.

Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/james-braddock

James Braddock Cards

Name: James Braddock Card Price Index — Historical Data
Creator: HobbyCardIndex
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2 cards · Boxing

All James Braddock Cards