So how can you tell if the teins you bought were knock off or the real deal? Or you can't at all?

Also how can you tell if the hood of the J's racing is real or a knock off? The Type V hood.

Somone said there should be a gold badge on the underside or a silver ? Is that true? And when i saw the hood. It had like what appeared to be scratch marks on it. Couldn't rub it off or anything. What he told me was that becuase of the engine and how the heat made those marks? TRUE? i don't think it was true but it could be? Let me know if you guys know anything about stuff like this

The hood is CFRP version.

Thanks

David