I noticed that this machine has the 30 second spin spray rinse whereas earlier and later models had a one minute spray rinse. My timed-fill Highlander also has a 30 second spin spray rinse.  I have also seen a couple of the 102P models with the 18 minute delicate cycle.

The Supermatic with the 12 minute delicate cycle, sorry, not 18, on the dial was a one speed, two cycle machine. The delicate wash was 2 minutes. The spin was 1/2 a minute then a 1/2 minute for the flush rinse. It filled for the rinse then rinsed for one minute and spun for one minute. I don't know how it pumped all of the water out in one minute except that I think that they were counting on delicate loads being small loads and using the low water level.

I found this in the service manual for: AMP, A2MP, A3MP, A4MP, 121P, 101P, 101P, 102, 140-140-S and 130.