[NJARC] Early 1930s Superhet Coil Nomenclature Challenge

[Marty Friedman]

First , we must agree that the radio in question is the early version 
WITHOUT AVC. That can be confirmed  by the dual volume control and lack of 
type 35 tubes.
Looking at Beitmans, The coil with the B+ on it is given 2 different names 
on different pages. One reference calls it the Detector coil, the other says 
interstage coil.
To further complicate things the diagrams, parts layouts, and parts lists. 
don't agree.  This gave me a lot of grief when restoring my set.See pages 
125-127 of Beitmans Most Needed 1926-1938.
Marty