Selmer Paris Alto Saxophone Mouthpiece Prologue. Includes dedicated ligature & mouthpiece. Square chamber model. Tip opening: 1.55mm Facing: 24.00mm The new Selmer Paris mouthpiece "Prologue" has arrived. Born from the expertise of Selmer Paris, which has consistently delivered outstanding instruments to musicians around the world since 1885, the Prologue utilizes a new thermoplastic polymer material, successfully achieving the same ease of play and rich sound as hard rubber mouthpieces. Square chamber model. Tip opening: 1.55mm Facing: 24.00mm SELMER MP ALTO SAX PROLOGUE I received this mouthpiece from an acquaintance, but it doesn't suit me. I'm currently using a YAMAHA 4CM mouthpiece, so I'm offering this to someone who needs it. The cap and pouch are not included. I used it for a trial run of about 20 minutes, and then disinfected it. Please check the images and only purchase if you are satisfied. There may be oversights. Shipping will be done with bubble wrap. Depending on the packaging situation, the shipping method may be changed to Rakuraku Mercari, Yu-Yu Mercari, Letter Pack, etc. Please understand this in advance. Also, please read the ⚠️ notes in my profile.