Ohh, I think I see this is one with the soak designation on the control panel under the heavy soil button? 

WOW that machine is practically unused, the 16s were the first to have the constant rinse on the top of the wash chamber and it really helped as you had to load large pans and skillets in the top rack. I think that he 16s are my all time favorite KA machine they were differently the most trouble free KAs ever its too bad the model run was only a little over two years.

Hang on to this machine you can build it in or you can even take off the wheels and plumb it in at the end of a counter run or add an island to your kitchen and connect it from under the floor. As a portable they seem to get used less often as it is a heavy and bulky machine to push around the kitchen and you may be less likely to use the rinse hold and plate warmer cycles if you have to move it to use them.

I fell in love with this model when I was younger and my friend's parents remodeled their kitchen, including a KDS-16 in the finished product -- harvest gold, of course.  I saw the "Party" buttons and it was love at first sight.