SCG7220 - Australia – 50th Year of Regular Radio Broadcasting (1973)This 7 cent commemorative stamp from Australia celebrates the Golden Jubilee of regular radio broadcasting (19231973). Designed by Eric Thake, the artwork features a stylized vintage radio set and gramophone horn, symbolizing the early days of Australian radio. The clean, modernist design combines soft teal and brown tones, evoking both nostalgia and progress. Issued by the Royal Australian Mint (RBA), the stamp honors five decades of communication