Vincent Bach 6-1/2AM This is a mouthpiece I used a long time ago for my euphonium. Please note that this is not the original owner's, and I do not have much knowledge about it. I will answer any questions you may have to the best of my ability. It has been sterilized. Please refrain from purchasing if you are overly concerned about its storage condition, as it has been stored by a non-professional. Brass Band Musical Instrument