Thought it was gen but the wording in rotor looks a ticketed not engraved? It's the right font but doesn't look engraved - like a v6 rotor..
As others say hublot are easy to authenticate - no idea what you're thinking dropping 14k without getting it authorised first, you must have also not got it from a well trusted dealer otherwise you wouldn't have any reason to believe its not gen so do it ASAP!
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