Extra Knob On Top Of Early 60s MT Washers
MT also had an identical looking knob on the A900S all push-button Suds-Saver washer, except it was labeled Drain-Save-Return, the knob could be left in either the save or drain position, and when turned to the return position it started the rapid advance timer motor to advance the washers timer to the suds return position, as soon as you released the knob it would spring back to the save position.