Boxed Marx O Gauge Set No. 7090 Union Pacific M10000 articulated streamline diesel passenger train with M-10000 Union Pacific United States Mail Railroad Post Office powered unit, two Union Pacific coaches and one UP coach buffet observation car.  709 transformer, straight and curved track and track terminal.  Trains look very clean and shiny C6-7.  Box has original dividers, bottom has old clear tape repairs to some corners, some light wear.  Lid has some old clear tape repairs to corners, some age darkening and stains.  Box is fairly square and solid.