For years, there was little to worry about when it came to faking name brand pipes, because anyone with the technical chops to make a convincing fake could do better producing pipes under his own name. It looks like the sweat shop model/low labor costs in Asia are starting to undermine that barrier, though.
Here's the first example I've seen of what looks to be a mass-produced Dunhill fake that while it screams all kinds of wrong to a collector, is well enough made to fool a casual buyer:
Here's the first example I've seen of what looks to be a mass-produced Dunhill fake that while it screams all kinds of wrong to a collector, is well enough made to fool a casual buyer: