Not sure how relevant this is to MMD, but Robbie asked, so...

 [ Sure it's relevant -- MMD serves the interest of the readers,
 [ and us old-timers enjoy trivia like this!  ;)  -- Robbie

Baldwin's "Acrosonic" got to be almost a house brand.  Some ads seemed
to plug "Acrosonic" spinet pianos, with "built by Baldwin" somewhere
further down.  Same with the Baldwin "Hamilton" console semi-uprights
(a great used piano if you can find one).

I didn't remember "Silvertone" being used for Sears band instruments,
though their catalogs had a sidebar about "the importance of buying
instruments made in Elkhart, Indiana," so Conn or Bundy may have made
them.

"Silvertone" was best known for radios, phonos, and later, TVs.  Other
Sears house brands included "J.C. Higgins" sporting goods and guns and
"Tower" office machines like calculators.

Many companies have a separately-named brand for their cheaper line,
so as not to tarnish their own image.  And nowadays we have the
prestige line as well -- in this case I would say Lexus is a Toyota
"house brand" as is Honda "Acura" etc.

I do antique radios so have learned several house brands of various
department stores and chains:

  "Silvertone" -- Sears
  "Airline" -- Montgomery Ward
  "Truetone" -- Western Auto chain stores
  "Coronado" -- Gamble's (a Minneapolis dept. store)
  "Air Chief" -- Firestone chain stores

For a while, Philco called almost all their radios "Transitone."  And
who can forget (despite trying) RCA Victor's "Golden Throat" labeled on
every little table set?

There must be zillions more.

Mike Knudsen