This is an original advertising mailer for the Wurlitzer Satellite remote speaker and selector.

The Satellite was a companion piece to the model 3100 Americana.
The Satellite does not have a mechanism - it is basically a big wall box with speakers and is almost the same size as the model 3100 jukebox.
This piece was originally mailed in a standard business size envelope.

The photos below show each face or page, even if one side is blank or has little on it.
If the piece came folded I have taken a series of photos as I unfolded the item to its full size, including both sides in the fully open condition.

In the open or unfolded condition this piece measures about 8.5 by 11 inches.