[tulakes2]

I have several unopened 1990 fleer baseball cards. Would they be worth more if left unopened?

[cookingsnow]

In all of the other collections and experience, yes. They are worth something as long as there is a market for them. In years to come many may have opened their cards, but you will have a collection that is still unopened. With anything if you have something that there is not many of and everyone wants, that drives up the price.