Couldn't fine anything in the Doyle or Greenberg books....or online....
1463w was in the 1950 catalog.
1463ws was in the 1951 catalog.
The contents were similar. The box looks more like a 1950 box than a 1951 just based on pictures......but that's not hard data.
I couldn't find anything on the "c" determination......could it mean Canada? Was the electrical service the same as the US at that time? Was it different warranting a change in the transformer?
I'll be interested in what others know.....
Peter