How much would this autograph willie mays pick cost?

i got this old pic I HAVE 3 i went to this mall once and i saw the great willie mays but when i was little i didnt know who he was so i really didnt care but now how much do you think 1 autograph pic would cost and its not a certified pic do you think anyone will take this pic seriously like would buy it and lastly i have a mike mussina autograph that is certified and is when he was in the orioles how much and thank you.