This I believe is a Williams or atlas o scale SanteFe deisel engine. It has twin motors and some type of circuit boards with two wires unconnected. When placed onto a piece of track and power given to it nothing happens. It is a project train for somebody who knows how to make these things work either by rewiring or possibly replacing the boards. Really big train measures 18 in from coupler to coupler. . I''m listing it in poor condition because it doesn''t run but like all these older trains they Normally can be brought back to life if somebody knows how to make the correct connections. No returns sold as in condition. Oh the horns also came off but I have them and they can be glued back on. Thanks.