Maybe someone can help me with this question. I have 2 different Norfolk & Western J Class #611 and matching tenders, both made by Lionel. One set is very old from the '60s. It has a red stripe. The other I aquired fairly recently (2 yrs. ago) This set has a brown stripe. I'm just wondering if the newer set is also conventional or could it be comand controled. How can I tell? What if any, are the differences between the two? I know there are very many knowledgeable people here, so I'm hoping someone can help.