February 1981 British advertisement for the new Sonex series of guitars from Gibson. This ad promotes the whole series, but pictures the entry level model, the Sonex-180 Deluxe. This ad was followed by a very similar one here (at least using the same image) the following month.
The challenge. To produce a really low price, solid guitar good enough to bear the Gibson name. The solution. The new Sonex 180 series. Thanks to its revolutionary Multiphonic ™ body construction, (actually, a combination of Resonwood ™ and maple) Sonex series combines classic Gibson quality and performance with prices that look more like down payments. Available in Deluxe, Standard and Custom versions, Sonex guitars come complete with their own branded case, yet prices start at only £215. Check one out now at your nearest Gibson dealer. He'll show you how to blow away audiences, not money.