There's all kinds of not right about that thing. Unfortunately, the shape isn't one of them. Or, it is, but it's legitimately not right not by being a fake shape, but by being a shape that should never have been. The colour bugs me almost as much as the "stamping," which looks like a fifth grader scribbled it on with one of those vibrating engraving tools. What I find fascinating is that the genuine version beefeater pointed to may have been the model for this possible fraud. Dunhill stamping has never been that consistently placed from one pipe to the next, so the erstwhile engraver might have used the photos of the genuine 584 as a guide for his forgery. The letter spacing is wrong, clearly, and more than a little comical, but the placement is just too coincidental.
Funny stuff. It doesn't surprise me that someone bought it, and it's possible the buyer may be a real Dunhill collector; John Loring was always on the hunt for examples of the counterfeit Dunhills that were made in the 80s.
But, that "stamping." For realz?