Maytag Mates
Maytags (the REAL ones) went through 3 almost neatly segmented eras. First, the AMP washer matched the original down-draft dryer with the 3" exhaust. Then the spinning tranny washer mated with the Halo-of-Heat dryer. Then the Orbital washer mated with the "Stream-of-Heat" dryer. However, the last transition wasn't so synchronized. The HOH dryer was replaced in the late 70's by the SOH, long before the Orbital drive washer came out by about 10 years. So you see, the SOH dryer saw a few "Centre Dial" years, whereas the Orbital drive washer came long after.