Found an ebay auction for one clipped out of an April 20th 1978 issue of Rolling Stone.
https://www.ebay.com/itm/Vintage-Star-Wars-Collectable-Extremely-Rare-Advertising-Page-X-Wing-Teac-Audio/193435759895
There are a couple others, but I can’t make out the text.
Interesting! Was that taken from a newspaper?