This is one of the best soprano mouthpiece designs ever produced. Many, many mouthpiece companies opted to use this mouthpiece as “their” soprano mouthpiece offering rather than create their own. The reason? It’s a GREAT piece. And it is no longer made. But, Riffault made these pieces for any number of big and small mouthpiece companies. This one is engraved COAST. It just “sings”, plays effortlessly and with a gorgeous sound. Plays perfectly with Marca # 3 American Vintage reeds, with a beautiful voice and even response. Intonation is pure, response is crisp across the entire range of the horn. This is one of two Riffault COAST soprano pieces I have here now. Both are really great pieces.