I would love to be able to help, However I'm not too sure with my copy either.
I am assuming that my copy is counterfeit as I cannot 100% be sure, therefore erring on the side of caution.
It is one of the hardest to tell. I have looked at the Link below,
I have been told to look out for a flat edge or bevel edge, Not sure if the bevel relates to the Label edge or Vinyl edge.
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As John points out, he has discovered 2 Counterfeit / Boot copies.