Ben Wade pipes were made under the guidance of Preben Holm. Preben Holm was considered by many to be a driving force in this style of pipe. Unlike Sixten Ivarsson, Preben and those who worked with him did not focus on tweaking a perfect shape out of a block. Instead, they tried to utilize grain, therefore the shapes were all different. While we've had quite a few lower-number lines (200, etc), this is only the second "Nobel Prize" and is graded 4000.