At MidCentnurse....
That is a Electrolux CB2000, it was their Commcercial machine. There was first the CA in 1962, that was turqoise and was tottaly diffrent. The CA ran till 1968, then the CB was introduced, there were 4 diffrent CB's to match 4 diffrent model sets. The CB 200 was slightly imroved, and had a new powernozzle. The CB2000 you posted is from the early 80's, and matched the Sliverado canister.