A former colleague, from my former life, his family had this dryer along with a 2-speed, 2 cycle, Kenmore 500 washer. His dad was an appliance repairman.
This and the 1965 LKM dryers were the first dryers WP ever built with a fully electronic dryness control [ no mechanical timer at all and no timed dry cycle ]
This model was brought out in very late 1964 along with the 65 LKM dryer so people who bought last years LKM washer could get a matching dryer with the electronic control system.