I have not tried to remove it. This plays well and is flexible as these old Bergs are known for. You can play soft and it has some power too.
Has a bit more edge to the sound than say a Meyer or Brilhart. I bought this as I always wanted to try one out. The item is in Belgium, Europe. The item "Very vintage Berg Larsen HR alto saxophone mouthpiece 75/2" is in sale since Wednesday, June 30, 2021. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Parts\Mouthpieces". The seller is "david_machin2012" and is located in Mechelen. This item can be shipped worldwide.