If I were interested I would want to know the current issues with the machine as best you know them and I wonder what happened to the backglass in the time between the two photos? Looks like paint is either leaving or arriving without explanation. Better photos of the playfield would also be of interest to a potential buyer.

Edit: As Tom pointed out, it's not even the same head. Red flag. Photos not taken in the same room either. Buyer beware.