Robert: WOW thanks for your input. It makes sense that Marx always a leader in creating value would not create a set with but one possible group of cars. Yours are clearly “deluxe” 8 wheel plastic cars so using them with the 21 is logical and cool. Do you know the set number for your set? I would just like to keep track of the variation. Again thanks , NEW knowledge with Marx it is a never ending surprise.
Regards Don McErlean