Radio premium
During the time that radio programs were the dominant medium in the United States, some programs advertised "souvenirs" of the various shows, which were sometimes called radio premiums. The first of these were generally cast photographs and the like, but eventually, these evolved into novelties that many children collected. By the 1930s, premiums ranged from rings through pocket novelties to "decoder pins," also called "decoder badges". Most of these were obtained by sending the sponsor's agency a proof of purchase, such as a boxtop or jar's inner seal, and frequently a small amount of cash, such as a dime. One amusing address was for Chief Lone Wolf who was strangely on the 14th floor of the Wrigley Building in Chicago. Many of the rings were multifunctional, having a feature beyond just being jewelry. All were "one size fits all". Quite a few had "secret compartments," and others had built-in siren whistles. Some rings were composed in whole or in part of luminous materials. A premium from Jack Armstrong, the All-American Boy program, offered in 1940, was a ring called the Dragon's Eye Ring, with images of crocodiles supporting a greenish "stone" made of Tenite. The molds for the ring were