I tried this with a 41xxx SBA, it fit perfectly and offered a real difference. It fit loosely on a early 58xxx VI and would need tenon tape or an adjustment. On a 119xxx it fit well and sounded very similar to the original neck. I see no signs of pull down and no signs of any damage.The item "Selmer Mark VI Alto Sax Neck fits SBA too" is in sale since Monday, October 14, 2019. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Band & Orchestral\Saxophones". The seller is "jwsaxophone" and is located in Quincy, Massachusetts. This item can be shipped worldwide.