What color is the " gyrator " ?
The list I have states that wringers of 1954 thru 1965 ser # 's were 5 digits followed by 2 letters. The letters of this list are exclusively
for wringers
The next alphanumeric breakdown list states for 1966 - 2013 serial #'s were six digits followed by two letters. I makes no distinction that
wringers were numbered differently than automatics , as does my first reference.
I can't recall the last production year for Maytag wringers, but it appears that yours is from 1966 forward.
In all cases, the first letter designates the year , the second letter designates the month
I have a more detailed serial # list breakdown ; unfortunately , at this time I am unable to grasp it in my paw(s).....
Might you be overlooking the two letter suffix?