Here's some pictures and infomation about the Philco 333:
http://www.radiomuseum.org/r/philco_...s_set_333.html
This TRF receiver uses three valves. RF amplifier, pentode detector and pentode output.
Were the original batteries outside the cabinet in the same manner as the Bush BP10 (battery DAC90) or fitted on a shelf inside the cabinet?
DFWB.