Fixing a Zenith Circle of Sound Clock Radio - The C472 and F472 - Flip Clock Fans Forum
ZENITH ELECTRONIC CIRCLE of Sound Clock Radio Solid State Works Except Alarm. £36.42 - PicClick UK
Uncle Lem's Clock Shop: Project 101: 1971 Zenith Circle of Sound Clock Radio
Zenith Circle Of Sound Model R472 - YouTube
File:Vintage Zenith Circle Of Sound AM-FM Solid State Table Radio, Model A424W (aka The Metropolitan), Made In USA, Circa 1970 (26835326884).jpg - Wikimedia Commons