Sweden’s large multinational Electrolux company bought up many vacuum companies over the decades since the 1970’s. Because of this, they owned the rights to put many different brandnames on many different cleaners (Electrolux, Eureka, AEG, Sanitaire, Volta, Eureka-Forbes in India, Progress, Euroclean, Lux, Viking, Dometic, etc). In the 1990’s, Electrolux started exporting some models from their Swedish Volta company and rebranded them Eureka for sale in North America. These Swedish-made Voltas were often married to American-made Eureka power nozzles to create very good power team canister cleaners to be sold in North America.
This particular Eureka Home Cleaning System is comprised of a Volta “Gemini” canister and a North American Electrolux “Oxygen” power nozzle. The electrified wands created in Bloomington Illinois were notorious for failing as the electrical contacts would burn up when users disconnected them without turning off the vacuum.
Early 2000’s sounds about right. Check Sears catalogues from about that time for details and pricing.