[Arran]

Philco used Candohms (it is in my 46-250). Or something that looks like it.

Mike;
  I think that Philco started using Candohm style resistors around 1937 as line droppers in AC/DC sets, prior to that they used the large tubular wire wound types for power resistors. In any event I prefer the prior rather then the latter, even though they can both go open since Philco didn't think it necessary to enamel coat their in house made wire wounds.
  Getting back to the model 40-150, those used brown rubber zip cords, which unfortunately like to dry out, crack, and fall apart, much like the chassis hook up wire they used. I think if it were mine the cloth cord would come off the 40-150, be replaced by a modern brown zip cord, and be transplanted onto something older that came with one originally.
Regards
Arran