Price reduced! Yamaha Euphonium Mouthpiece 51D M. This is a new, unused mouthpiece from the old model number. It was a display item, so it didn't come with the original plastic wrapping. It has also discolored, but I'm selling it as is without cleaning it. If you polish it with silver polish after purchase, it will become clean. I kept it in storage after buying it, but I no longer need it, so I'm selling it. I hope someone will use it.