[joybird]

No I believe the one is correct. I have it removed and polished and it is Stamped 4 MFD the Other Can is the 6 MFD Filter. P/N Philco 6707-S.
Also stamped C122 on that can.

This chassis has got me thinking, I do firmly believe this is an untouched chassis.
It is different than any other 80 I have seen.
It does not have the 10MFD Can shown on chassis layout in Nostaglia.

I have learned so far there were at least 12 runs of this chassis.
Not sure what run this chassis is, the only other marking on the chassis is
105 81 ,this is stamped in Black INK on front of chassis below 42 Tube.

The 16K resistor from the 4MFD is rather larger than see on other 80 chassis.
The chassis on this cleaned up beautiful no rust, I cleaned it and hit it with a coat of clear Satin Lacquer,
As I get into restoration I would like to see if I can determine what Run this may be.
I will look in my old Gernsback Schematic for the 80 and see what turns up.

Interesting Radio

Bob T