thats an 80s Eureka. The plastic handle and lack of Eureka logo with the stylized "E" is a dead giveaway.
also, that "Vibra-Groomer II" is most likely sleeve bearing. Eureka only used ball bearings on the commercial models and select upscale home models. you will want to make sure the Hoover belt is not too tight as the bearings on these brushrolls are not the best and tend to wear out.
looks as if excellent condition!