07-05-2018, 09:30 PM
That seems right - and that sure does look like a date on the transformer.
The other 660 based models were intro'd in June 1935:
http://philcoradio.com/gallery2/1936a/
and had been discontinued as of January 1936:
http://philcoradio.com/gallery2/1936b/
The other 660 based models were intro'd in June 1935:
http://philcoradio.com/gallery2/1936a/
and had been discontinued as of January 1936:
http://philcoradio.com/gallery2/1936b/