- Discuss the role of companies like PSA and BGS in standardizing card conditions and the influence of grade on pricing and desirability. 3. **What are some of the most sought-after basketball cards in history, and what makes them so valuable?

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- Discuss the role of companies like PSA and BGS in standardizing card conditions and the influence of grade on pricing and desirability. 3. **What are some of the most sought-after basketball cards in history, and what makes them so valuable?