Morgan Excalibur Mouthpiece for Alto Sax Type (Opening): Excalibur 5E Serial Number: 24940 Sold for $339 on Morgan's HP A valuable "5E" model. Ease of Blowing: The "5E" has a long facing, making it easy to blow smoothly. A long facing broadens the point of support where the reed vibrates, allowing sound to be produced with less breath. Timbre: The long facing produces a rich tone with overtones and a sustained sound. There are a few ligature marks, but it is mostly undamaged.