[Arran]

16 gauge is too heavy, it's probably closer to 18 or 20, close because the British have their own system of wire gauges, and like Canadian Philcos they probably used locally sourced wire as opposed to importing it from the U.S. The wire Philco used on most of their pre 1939 models, in Canada and the U.S, is frequently called "Pushback Wire" 20 or 22 gauge with a fabric cover that you can push back rather then strip. Like Mike said, for capacitor values, just go with the closest industry standard value, in a yellow film cap, restuff the original cardboard shells if you want them to look authentic. The same goes for resistors, except you want the next highest standard value, but keep in mind that new resistors sometimes have voltage ratings if they are carbon film.
Regards
Arran