[klondike98]

It’s a 53C as pictured in the Philco gallery (see morzh’s link https://philcoradio.com/gallery2/1933a/#Model_53C ) The top is slightly different with additional vent slots. Probably a change made during the production year. The front is missing the Philco decal probably because someone refinished the cabinet at some point. Nostalgiaair lists chassis schematics that were in the Riders schematic collection. The same chassis can go into different style cabinets for some models. The “C” is a cabinet style designation.