Hi April. Your little Eureka is most likely from the mid to late 70's. It's a later, stripped-down version of the Princess model which came out around 1961. Yours looks to fairly clean and in good shape, and disposable bags for that model are still available online so, if it still runs well it could be a handy little vacuum in a small apartment or for quick cleanups. The price when new was probably around $30. I wouldn't say it has a wide appeal as a collectible, but it might catch the eye of someone with a very specific interest.
Neil
