Mike Scioscia 1988 autographed LA Dodgers bat value?

Hello, I won an autographed Mike Scioscia pro LA Dodgers bat in 1988 at a grade school raffle of all places and was curious to know its approximate worth. It an official LA Dodgers bat with his name & number insignia that's never been used in a game and in mint condition inside a protector. Any guesses on its value or anyone happen to know of a site/place where it can be appraised? Many Thanks!