Welcome!
Wow, that is quite a find!! New Zealand machines seem incredibly rare. Especially the 50s Electroluxes, man I'd love one of those.
You will most likely need to order a hose, tools, and bags from the US unless the other NZ collector(name escapes me) chimes in, or someone from Australia. I will look around and see what might ship to your country.
The outer bits can be rubbed down with a Magic Eraser to clean up the scratches and scuffs. How does the motor run? Any weird noises?