This is a genuine MT. VERNON mouthpiece, model 5A‼️ Rare to find‼️ It's an A cup, even deeper than the standard, and produces a beautiful sound. How about it as a second mouthpiece for your case⁉️ I've used various mouthpieces like Bob Reeves C2J, but in the end⁉️ and⁉️ lol This one does a great job‼️ Experience the sound of a Bach mouthpiece from the era that inspired manufacturers worldwide‼️ *There are some modifications on the shank, please see the photos.