[Eric H]

I don't know what the rating is, I haven't taken it apart yet.

The history of these is pretty interesting, according to the Internets (which are always right) , they were originally designed and used to clean Hughes Airplanes, they worked so well they started selling them to the public via door to door salesmen in 1946 or 47.

This one has a plug on the side, presumably for power attachments like a beater brush or rug shampooer, I could use it to plug in an old TV I suppose.
Seems like a seriuos shock hazard being completely exposed like that!

The housing is made completely out of Aluminum, early models had skids instead of front wheels, from what I read online the Anniversary model is from 1966, I guess it was the 20th anniversary.