Bought some ‘supposedly’ genuine centre caps from a private seller on EBay.
One is in a genuine looking BMW parts bag, the other three were wrapped in bubble wrap.
Two of them look ‘stained’ almost like water marks for want of a better expression, but I can’t work out if they have a film on them that needs to be removed... and if this is just a film that needs removing?
It’s a bit like sellotape if it is... in that I can’t find end edge

One is in a genuine looking BMW parts bag, the other three were wrapped in bubble wrap.
Two of them look ‘stained’ almost like water marks for want of a better expression, but I can’t work out if they have a film on them that needs to be removed... and if this is just a film that needs removing?
It’s a bit like sellotape if it is... in that I can’t find end edge


