Yes, I also believe this is a real Maytag, not a Whirlpool-designed machine. I owned one of these for a couple of years. Consider yourself lucky! The real Maytags are great cleaning machines---including tough pots/pans.
I was very skeptical of the tiered upper rack, but it became one of my favorite features of the machine. The tiered rack allows you to stand two 13" x 9" cake pans on end on the left side of the lower rack, and they'll come perfectly clean.
Congratulations and many spotlessly clean, care-free loads await you!