Interesting. Does Trew audio or Amy reputable store that does consignment check whether mics like the 416 are authentic and not fakes. I would hope that they would or any of the usual stores would knowingly post a fake item.
Also would you not hear that it was a fake when you are testing it out before you buy? You did try it before you laid down the money? Though I have never heard what a fake 416 sounds like. I imagine of it does not sound right you would have walked away from the deal.