Melvin is correct. I will add a little more detail: the 1979 model large capacity machine is a stock number 29401. This basically means 29-inch, 1979 large capacity 400 series.
The machine that Paul has photos of should be stock number 27451 I think. It’s a twin of the 79 large capacity, but debuted in 1977, thus the 7 in the stock number. I believe it was available until the 1980 models came out. Still a 400 series, same identical features to the other, it just started out in 1977.
Possibly interesting to some, the 1976 versions of these had black control panel bezels to match the higher end black panel models. I have never seen one, other than in a catalog, however, the black bezels with white knobs must have been striking.
The 1980 400 series was quite a bit changed. Same standard capacity with straight vane agitator, but the machine was a three cycle, two speed model with no water level adjustment and an ebony decorative insert on the left quadrant of the panel.
Gordon