Ohe Unique Machine!
If I'm not mistaken, this was the ONLY model of the Kenkart where the cart was actually part of the machine, instead of being added on to a tank like the earlier models. And yours is a beauty!
I actually have a copy of the 1956 Fall & Winter Sears Catalog, and this model was priced at $99.95. Two other tanks and four canisters were also offered, but oddly no uprights!
Jeff