The market for collectibles can change quickly. Usually what is worth the most money consistently are rare Autographs on rare objects. Meaningful equipment (like a historic Baseball) can command a hefty price.
Manchester United
The market for certain collectibles like toy robots can fluctuate based on demand. Currently, there are two that are worth the most in mint condition: The Lost in Space B-9 Robot and the Mr. Atomic robot.
Generally speaking, collectibles are always going to be worth more when they're in their original packaging, than those that have been opened and/or used. There are rare circumstances where collectibles are worth more if they look 'vintage' by having some wear and tear, but this is not the case with most collectibles. As you did not specify exactly what item(s) it is that you have, it is hard to say what the case would be in your particular circumstance.
Oprah Winfrey is the African-American entertainer worth the most money.
The ACC?
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professinal hopscotch
According to a research tiger woods makes the most money
In mexico, Our money is worth 30x more than are money in the US of A !
Since Gold is a mineral, gold is worth the most money. It's near $1,000 an ounce
tiger woods
Ohio State