Pushbutton
I think the washer was produced from 1959-1970. Starting out as the 160, then becoming the A900 then onto the A906. The dryer (DE/DG750) came later, maybe 61/6 but not as sure on that. As mentioned, when the push-button washer came out there was no push-button match to it, so you had a TOL push-button was and a dryer with a dial.
-Tim