Yet another iteration of KA that I've not seen before.  It appears to be a 21 series Imperial from the looks of the panel, but I've never seen one with plastic buttons.  My KUDI21 had chrome buttons and a china guard.

Maybe it's a series 20.  We saw recently where series 18 models below Superba had buttons found on series 20 machines, so maybe series 20 models below TOL got 21 series buttons.

The timer markings and selector button cycles/options appear to be identical to those on an Imperial.  Could it be that series 21 Customs were only cosmetically different from the Imperials (with the exception of the china guard)? 

I thought Steve T's series 21 Custom only had two selector buttons instead of five.  Is it possible that the subject machine is a series 22?

Ralph, I BELIEVE SteveT's 21 Custom you are referring to may have been after the Whirlpool acquisition.  I believe the two buttons were for water heating and energy saver dry.  I had the same immediate thought as you.

We saw lots of this model around here, they also made models with a plastic top wash arm and no China-Gaurd.

There's our answer.  Apparently all the functions of an Imperial with cheaper trim inside and out.

I guess when it comes to the 21 series and the transition over to Whirlpool, all bets are off with regard to features and components across the board.  Caveat emptor!