That's a beautiful set, and probably a rebadged Olympic or Emerson. My great-grandmother worked at Grinnell Brothers in downtown Detroit from the 1920s until she died in 1947. My great-grandparents purchased their first set at Grinnell Brothers, and it's in my collection today. It's an Emerson build.
In case you didn't know, Grinnell Brothers was a Detroit area retailer that dealt primarily in musical instruments and household appliances. They were known for carrying only the best as far as their musical instruments went; I personally consider a Grinnell piano to have no superiors. Given the option of a Steinway, Blüthner, Bösendorfer, or Grinnell grand, and I've played very fine examples of each, I'd pick the Grinell every time...
Anyway, your television is lovely
-BL Moyer