its either a consolized MVS (which, provided its the correct board, CAN be used with the AES sticks/pads), or a supergun. if its a supergun, then make sure it looks halfway decent, and not like some of the abominations ive seen arounds the 'nets
Which baseball stars is it? if its the first one, then it shouldnt drive the price up too much. if its 2 or professional, then it may increase the lot's value.
if you can get pics, take them