Great with S or O Gauge
You are looking at a vintage postwar American Flyer #596 Automatic Water Tower with control button. This one, as you can see, is about as clean as you will find. And it comes with the box, button, instructions, and a side insert with a cut out for the spout that I had not seen before.
CONDITION: C8, like new. Very clean. Might be cleanest you will find. Small box rub on tank paint. Layout residue along the base, pictured. Tested and works. Inner workings super clean. With operating light on top. With original button; button shows wear and scratches. Original instructions are discolored and dry. With original insert, in great shape. Box is P-7 with some outer label fraying, but mostly structurally strong and good looking.