- Discusses the trends, changes in popularity, and the impact of digital platforms and auctions on the football card trading industry. 3. **What are some of the most valuable American football cards ever sold?

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4 days, 6 hours ago in American Football Cards

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- Discusses the trends, changes in popularity, and the impact of digital platforms and auctions on the football card trading industry. 3. **What are some of the most valuable American football cards ever sold?