Selling my Large Sebenza 21 from 2017 made in q4 2016. It has a lot of use and wear on it but these are getting harder and harder to find. No ball detent on the 21 so it’s much smoother running on washers only compared to the 31. I don’t have the box for it but I have the birth certificate and box insert from CRK. Let me know if you have any questions!