This is a excellent player. Vintage hard rubber Birlhart Personaline S4 mouthpiece for alto saxophone. The body of the mouthpiece is in great shape while showing typical cosmetic character for an older hard rubber piece. The facing profile of the mouthpiece is in excellent condition and still shows the original mill markings on the table and up the tip rail. This mouthpiece has a tip opening of .078”, this is right under a 7 in modern tip measurements. It takes the air in very easy and has a rich free blowing response. This is a great piece if you are looking for a warmer jazz alto sound. The efficiency of the facing also allows it to be pushed and played with plenty of edge when desired.