First Portable Superheterodyne Radio Receiver, Made by Edwin Howard Armstrong, 1923 - The Henry Ford
File:Vintage Radio Advertising - Fada Radio, The Fada "One Sixty" With The Neutrodyne Circuit, From The Wireless Age, June 1923 (9701168685).jpg - Wikimedia Commons
Goltone crystal radio by Goldstone (~1923): Like modern passive RFID chips, crystal radios a hundred years ago didn't need their own power-supply. There was enough energy in the transmitted radio signal to
Sold at Auction: Marconiphone Type 21 Radio, 1923 | Retro radios, Radio, Vintage radio
broadcast, radio, advertising for radio set, tubes and headphones of TeKaDe AG, Germany, 1923, Additional-Rights-Clearences-Not Available Stock Photo - Alamy
Crosley Tube Radio Model Vi - Late 1922 or Early 1923 - RARE