David Johnston posted:.... Stranded wire was not used, except for special cases, until Lionel went to plastic wire insulation. This must that been about 1949.
Here's an example of why it's confusing. Two control signals an 078 and a 78. The 78 is obviously Pre War Standard gauge and it has the same ancient looking rubber coated stranded wire which is crumbling . I guess it could have been re-wired 50 years ago but I doubt it, looks orignal.
