That was our first dishwasher!!!
And it's a great machine -- noisey, but cleans well and holds a lot.
I am guessing it's a 1960 model. I graduated from high school in 1962, and I know we had this model before then.
That power fin is so strong, the whole machine would shake when it was running.
When it's finished with the last rinse, the lid pops open to let out the steam and aid in the drying.
You've got a great find!!!!
Jerry Gay