1) Sears Holdings brand
Found on
https://www.crosswordclues.com/clue/silvertone
[instruments] Silvertone was the brand name used by Sears, Roebuck and Company for its line of sound equipment from 1915 to 1972. A hand-cranked phonograph was introduced under the Silvertone brand by Sears in 1915. Beginning in the 1920s, the brand was expanded to include Silvertone radios and again in the 1930s, superseding the Supertone ...
Found on
http://en.wikipedia.org/wiki/Silvertone_(instruments)
No exact match found.
