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 is the value of 1989 baseball cards?
Where can I find Golden Treasures baseball cards?
Where can I get reliable sports card appraisals?
Do they come with gum?
Yes you can buy sets from your local card shop or through the manufacture. You can still buy packs that have gum from the 80s, but I wouldn't eat it.
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