Quick question: Williams wheels

[Tanks]

Just quickly how can I tell the difference between an orginol set and a copy.

Ps: I did a search, were too many posts to go through to find the answer

[richy]

original speedline williams wheels have the speedline logo aswell as size etc in the casting, the prima copys dont..

[katbloke]

prima centre caps are pretty much flat

[Tanks]

Cheers lads