The Fada 845 was made ca.1946 of polystyrene, and is found in marbled brown or white, an less commonly in maroon or marbled pea green.
Other variations included a red handle and knobs, and sometimes a green dial.
It's nickname, "The Cloud", likely originates from the marbled white version. 
This example does not have the correct knobs.
The 845 is often advertised as catalin, but is not.
A Fada model 700 has the identical design, but was made of catalin, in various colors.