clearcoat wheel stripper ?

Well these definitely have a "coat" of something on them. It's starting to flake and chrome looks shiny were it flaked off. so if it's not a clear coat please tell me what it is.
 
just buy some metal polisher. my wheels had a strong greyish coat when i bought the car, and after two hours of cleaning them with a metal polisher i could finally see they were chrome :)