Are unopened baseball cards more valuable than those that have been open, if so how do you determine what cards you have?
How can I determine the value of Topps baseball cards?
How do I make a baseball card case?
How do you get wax stains off of baseball cards?
What are the most valuable NBA cards?
Where can I find Golden Treasures baseball cards?
Where can I get reliable sports card appraisals?
Is there a book I can get?
Many baseball cards are valued depending on the set or on who's on the card. And yes,there are many books available on baseball card collecting.
It depends on what cards you have and the condition they're in. There are many books to help price cards; there are also free online sites.
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