Hard to assign value when there are several photos of the brass trim and zero of a well-lit playfield. Take the glass out, put some bright lights in the room. Get direct overhead shots of the playfield in good light. Take head-on perpendicular shots of all cabinet sides, not at an angle from across a dark room. Open the head and take a well-lit photo of the boards. Lift the playfield and take a photo of the cabinet interior. Et cetera, etc.
Or just keep it and play it! Almost certainly not going to sell for what you have in it.