[Davidra]

I have been working on an early Philco model 90 Baby Grand cathedral (two 45 output tubes and a local/long distance switch) and have a question about an unmarked capacitor on the schematic.  On the schematic there is a capacitor off the primary of the first IF transformer (see number 13) going to ground.  This capacitor is not listed in the parts list.  Actually, the capacitor does not even have a number by it on the schematic. 
 
There is no sign of this capacitor ever having been on the chassis and it is not drawn in on the location of parts under the chassis.  Does anyone know where it was located or why is it on the schematic but not the parts list?
 
Thank you for your help,  I have attached the schematic for reference.  Also, if anyone has a high resolution photo of the chassis of an early 90 It would really help.  There was a fair amount of change to the chassis before I received it and I am trying to get it back to the original appearance and layout.

David
Dallas, Texas