Found this Rubberset 200-3 in an antique shop a few months back. Finally cleaned it with the vinegar/dawn/MWF lather technique. Been using it daily since then and its one of the easiest lather makers I've ever used. I was a badger guy when I first started shaving and then moved on to a boar brush in the past decade but I think this is horse hair (if I'm wrong, someone can correct me) and it really works well with my MWF each morning.