This is an intriguing pipe.
In one way it can look as if a textured rough cover has been fitted over part of the bowl.
There is even a fine ridge along the edge of the covered section.
But what has actually happened is that the whole pipe was sandblasted, with the front panel and the sides of the shank carefully polished removing the surface sandblasting in order to display the lovely grain.
The careful Free Styling between the smooth and the sandblasted areas warrant the Autograph status.