1988 700T models. Dryer serial Jan 1988, washer isn't clear but seems as well. Second-generation KA laundry, which were the first KAs with dual-action agitators, although not yet the larger style (note that the base doesn't cover the perforations on bottom of the basket) with 3-speed motor. The washer has a 2-speed motor. The Heavy cycle is high agitation, Extra Wash is a true Super Wash with prewash and partial drain. Regular and Perm Press are high and low agitation. No stepped-spin.
These are also the first rotary-timer models. The 900S and 900T were electronic. The 800S and 800T were mechanical pushbutton with rapid-advance timer behind the panel like a Superba dishwasher.