I have been looking for another "Favorite" in oak, with the tone-louvres, twins of a sort.
When I search Google for images of the "Columbia Favorite phonograph", I get a fair variety of machines, with slightly differing hardware / playing-deck lay-outs, etc.
My Favorite has completely wooden motorboard / deck, with a little quadrant plate for the speed indicator / brake control. Tone-arm mounts in the back RH corner, as you face the machine, with "flats" on the outer edges of the mounting flange, to clear the edges of the lid.
I see other "Favorites" with the following variations:
Later tone-arms (cast-brass or pot-metal), mounted with in the back RH corner, or in the back center ( a la Victrola)
Motorboard deck hinged towards back, to allow access to motor, secured by two nuts of some sort at front corner
Early machines seem to have motorboard "flat", with no perimeter cabinet above deck level, others have a "recessed motor-board (a la Victrola).
Motor attached to round metal plate, with two "tabs" the protrude from under platter, one at "6 o'clock" bearing the "Columbia" / "Grafonola" name, perhaps a serial number, and the other tab at about "8 o'clock", with the speed indicator markings.
Lids: some have a very pronounced "Pagoda" lip, others seem to have a a gently rounded ogee curve (like the cheaper "Jewel" / "35").
Did Columbia ship phono hardware to their cabinet jobbers for installation, or did the cabinets come to Bridgeport, or ???
Once again, it seems that there is endless variety in Columbia-land...