I guess your collection is really growing! The $10 is a very good deal for a quality Hoover in good condition.
I'd love to know how these machines clean. I have 4 Hoover uprights and the newest one was built in the early 1930s so I have little experience with the later models.
Anyway, it looks like you have a fairly easy restoration project. Have fun with it.
Oh, and don't forget to put a new belt on it if you haven't done so already. An agressive brush roll like your Hoover has combined with a worn belt makes for poor performance.