The Radiola Senior replaced the earlier Aeriola Sr. in early 1923.  The only difference was the molded Bakelite panel, Mahogany case and a metal nameplate to replace the paper "lid label". Soon afterwards the Radiola AC (a 2- stage audio amplifier) and the Radiola RS was added to the series.

< Manuals, labels & other paper for the above and other RCA Radiola models are available.