[Ron Ramirez]

Thanks very much for the newspaper link. I see it is dated November 4, 1933, by which time the 89 had four knobs and had AM and the "police" band - yet the illustrations show AM-only 89 sets.

Edit: And the ad says "...get your Philco now while our selection of new models is complete. There may be a shortage, so we urge you to hurry!" I wonder what "shortage" they were referring to? Just advertising hyperbole, perhaps?