What role do third-party grading services play in the authentication and valuation of sports cards outside of the mainstream sports like football, basketball, and baseball?
What are some challenges collectors might face when attempting to sell or trade cards from non-mainstream sports, and how can these be addressed effectively?
3. **In the realm of sports cards for niche sports (like golf, tennis, or wrestling), which cards or sets have gained significant attention from collectors, and why?
4. **How do digital and blockchain-based sports cards, such as those offered by platforms like Sorare or NBA Top Shot, compare to traditional physical cards in terms of value and collector interest?
5. **What are some tips for new collectors interested in starting a collection of sports cards from less mainstream sports, and how can they identify potential future value in these cards?