Vintage S Scale (?) American Model Train Crane Car ESTATE FIND

For auction is a vintage AMERICAN model train crane car. I acquired this item from an estate clean out. I am not a collector, nor am I familiar with the item. I do my best to picture and describe item. pictures are part of the description, please view closely I am guessing it is S scale. 6/16" from wheel rim to wheel rim. (hope that helps) the condition is do to it being stored in a barn dirty there is some paint chipped off the wheel rods/pins have rust magnet does not stick to body there is a bolt missing to keep both parts together, as pictured I am not sure if there are any other parts missing base is 3.5" long, crane part is approximately 7.5" long Check out my other items !delivery confirmation is included in the shipping I do not accept returns. I try to picture and describe item, the best I can. I encourage any questions, prior to bidding. Thanks for looking.