[Joeztech]

Have you looked at the resource list: http://www.philcoradio.com/resourceb.htm - there are a number of sources listed for schematics of various Philco models. One of them should have what you want. I assume you have looked at the Nostalgia Air 46-1201 code 121 schematic information? Incidentally, Philco used code numbers but did not use run numbers.

Others may be able to point you to schematic(s) and parts lists more compatible with your specific unit. There were production changes that were released through bulletins to dealers and service agencies and Riders and Beitmans publications do cover various production changes by manufacturers in their books, but finding the changes for a given model can be rather daunting.

Joe