Yes VM is The Voice of Music of Benton Harbor, Michigan. They were the largest manufacturer of record Changers and tape decks in the world up until the late
60's.
Check out thevoiceofmusic.com for their history and products and such.
Resurrecting my own thread...
Spoke to one of my wife's family members this weekend and they said it probably came from Muntz Stereo in the San Fernando Valley (which is where they lived at the time).
Anyone familiar with Muntz gear and able to provide further insight?