Brigham Voyageur 1-Dot Pipe #116 - Rustic Rhodesian

My first pipe from this manufacturer. Still in the process of breaking it in so my opinion is limited. It does promise to be more than adequate however and I'm glad I bought it.

I have several of these, my FAV. However the last one I got is not the same as the photo, it has a round stem instead of the usual diamond shaped stem. Is this a mistake, or have they discontinued the original squared shank?