[perezfan]

It happens all the time. There's nothing wrong with bringing it to peoples' attention (including the auction house in question).

There are a couple of items currently in Legendary being advertised as such- items of which I have seen other examples (some numerous times). One such example is Lot 508- the Pirates Schedule featuring Honus Wagner.... "the only known example in our hobby", they say.

This kind of hyperbole is unfortunately somewhat common in our hobby. Just because the auction house claims to have never seen another example doesn't mean that they don't exist. And sometimes they just flat-out fail to do their homework. Though it's rather irresponsible, I have seen many examples of this troughout the years.