After reading Mastiffdog's latest amusing posts, I, too, was left wondering about some things. Who here has the oldest locomotive in service on their layout? I started with a Varney F9 and set when I was a kid. I still have the cars, but the locomotive is history. The next in line is my Atlas FP7, from about 1980. I've done a lot of work on it to keep it running, but it still runs with all the original parts. Probably has a hundred REAL miles on it!