Don mattingly base ball signed by him and his wife. how much?

Question

it has a pic of him on it and a signed stamp of his name under the pic but it was also signed by him amd his wife. it is not in the best of shape looks like when i stored it it got some stuff on it. i have no clue how or what looks like coffee but i do not think so. but it is on the back of the ball and is not touching the signed part of the ball. or the pic of him. how much do you think it is worth.? and where did you get your info. looking to sell it so if interested let me know.

Answer 1

who

Answer 2

65. for dons signature according to becketts.............