[Arran]

Mike;
  I don't think that Philco was making their own capacitors by this point, it seems like they were contracting this out to outside suppliers who would label the caps as Philco brand, with their part numbers, and so forth. I can remember taking one of those cap and choke assemblies apart in one of their transformerless sets from the 1940s and found a Sprague brand cap inside of the cardboard tube they used as a coil form, and clearly it left the factory this way. Whether Philco always used Sprague as an outside supplier I don't know, maybe by 1953 they were sourcing from whoever would supply what they wanted at a given moment, maybe "Good All" was one of them?
Regards
Arran