While looking thru the early pages of this thread, I think this cap and coil
is to form a series resonant circuit to make for a low impedance at the set's RF upper midpoint frequency, around 1200KHz. So that the chassis looks like a good RF ground plane without having to use a cap too large that it produces too much of a shock hazard to the set's user. With the 0.022uF cap, it needs a 0.8uH coil and that will yield about 6 ohms of reactance. Using the coil inductance calculator at
http://www.66pacific.com/calculators/coil_calc.aspx and guessing 3/4 inch diameter and 1/2 inch length, I get about the 0.8uH value and thus the 1200KHz resonant frequency. Not completely sure that this is why they did this.
