Three advertisements from about 1978 hailing the arrival of the then new GE Potscrubber III (The 1200 model).
The models featured use the "Potscrubber, Heavy Soil, Normal Soil, Energy Saver" cycle selection (Plus China, Rinse and drying options), as opposed to the "Potscrubber, Normal, Light Soil, Energy Saver" designation used in later models.
http://www.ebay.com/itm/1978-AD-Debbie-R...
http://www.ebay.com/itm/1978-Debbie-Reyn...
http://www.ebay.com/itm/Vintage-1979-GE-...