Boxed Marx O Gauge Set No. 28822 Monon Diesel 81F A-B diesel locomotive units with 347100 Pennsylvania gondola, Erie flat car with stake sides, C-350 Monon caboose; freight train.  Caboose has a cracked handrail, otherwise trains look very clean C7.  Clean and shiny track, 1209 50 watts transformer, track terminal, uncouple here sign; included.  Original instruction literature included.  Box bottom has dividers, little wear.  Lid shows minor surface wear here and there, brown paper tape on ends and underside edges, some clear tape.  Box is overall bright, clean, square and solid.