The first thing I have to say is...
W O W
That IS INDEED one of the very earliest DDs. The print font on the control panel from the 1976-1980 models as Mark pointed out is one of the first clues.
The slightly different basket, the different clothes guard, the odd shape of the "D-ring", and the gold agitator are other cues. This machine is literally one of the first original few models of DDs ever. No doubt that is a spin drain model.
Those that had the gold agitators had their entire mechanisms rotated/shifted about 110 degrees clockwise as compared to where they were in the vast bulk of DD production. This meant that pumps were REAR FACING, or toward the back of the cabinet pointing to the left rear corner if I recall. I have seen exactly two of these before, and just to look at. This is a rare machine indeed.
This machine isn't "all that" in condition or features, but I'd say that someone in the club in the midwest really should get their hands on this machine, to save it for future study and have it in our club. It is truly a special oddity being the developmental ancestor (and somewhat different) to what I think is the most widely produced washer in western world history.
COOL find Jamie!
Gordon