Paul... you have a VERY early one there!
Hey Paul, CONGRATS on the "new" Maytag addition!
If I am reading the date coding sheet correctly, it looks like that washer was built in November 1965. This would make it the FIRST model year (1966) of the "06" model line! AND.... with that BLACK agitator, that would make perfect sense!
Unless I'm mistaken, the "Power fin" agitators are all turquoise and have a slot or gap between the base of the agitator and the "fin". This allows the "fin" to flex a little as the agitator moves back and forth (making it a bit more gentle on the clothes).
I'd love to see a better photo of the agitator, but I'm guessing the agitator is Bakelite and has taller fins then the "Power fin". It should be the same agitator I have in my 1962 A700. So that washer should be a std capacity washer. Look at the number of holes down the side of the agitator (for the lint filter) of there are only 3, it's a std cap, if there are more, it's a large cap.
On finding replacement buttons and a dial, contact RedcarpetDrew and/or QSD-DAN. They both have a WEALTH of knowledge RE: Maytags and may be able to assist in finding replacements!
YAY!
Best of luck!
Kevin