I'd give it a year of manufacture somewhere between 1958 and 1964 - not sure exactly. To attach an optional hose for use with attachments, you remove the nose cover at the front of the hood. The all-bristle brush roll was called a Disturbulator, and this upright took the famous top-filling Eureka F&G Bags.
The handle should have three positions: storage, regular use, and flat to the floor to vacuum under low tables.
Hope this helps!