I have a set of 3 K-Line yellow with blue lettering coal hoppers and I was wondering did this paint scheme really exist and for how long into the N&W merger? I can't find one picture of that paint scheme of a real hopper and I am guessing that K-Line may have made these to match the Trainmasters that were made in O scale.
BTW I am thinking of selling or trading them to acquire other rolling stock that interchanged into the mid 70s for Erie Lackawanna.