I got this brush back in October 2018 in a lot. I was after the Old Spice mug mostly, but I got the brush and the AutoStrop as bonuses. It appears to be a Rubberset 153. The knot was worn out. It was not what I was after, but I set it aside thinking I would one day restore it. Today was that day. I removed the knot and drilled out the hole. I resized it for a 24mm synthetic horse from Maggard Razors. I am happy that it will have a new life in my den.