value of autographs?

Sep 1, 2003
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hi yall
i once went to a florida marlins game and a i got phillies player bobby abreu autograph.
My question is if i was to sell any of these autograph balls would i be able to or is there some type of authenic certificate i need to get?
second is what website can i go to see the value of autograph balls cards etc.(i know my collection is worth 5o cents)
thanxs
 

Originally posted by: Vortex22
It's worth whatever someone will pay for it.

I see Ken Griffey Jr. and Sr. a couple times a week, always thought about it but i just never really wanted to ask. I was always too busy looking at the hot chicks that Jr. was walking with....(isnt he married? ;) )