The wheels measure roughly 2 inches a part so this is large/G scale or No1 scale.  

Thank you for viewing this item.  Please be advised that I am not the original owner, this item was part of my late father's collection, and therefore I cannot confirm if the parts are original, altered, etc.  I do my best to accurately described the item but if you have any questions or concerns please see pictures for more details and reach out via email.  I am willing to combine shipping on multiple items.  I used eBay's Global Shipping Program, where they calculate shipping and send an invoice.  

Vintage, used. This set of 4 (one engine, and 3 cars) are from American Flyer and include roofs that can come off, some more easily than others. Cars include an electric engine, a 'US mail', a 'Denver Colorado', and a 'Tri Cities observation car'. There are some lights on them, especially the 'Denver Colorado' car has red, white, and green lights, and the engine car. This lot is untested. The trains are in fair condition esthetically, but have several paint chips, dents, and scratches. Dirt and dust are also present. Some of the cars have doors that open. Please see pictures and ask questions for more information.