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Yeah, Doug Elliot makes euph mouthpieces. I've got one I'm trying to sell, 104 silver plated rim with J silver plated cup and a J8 raw brass shank with an extra 108 rim, if anyone is interested. I sold my euphonium to get a tuba, so I don't need this anymore.

You can also check out this website, those Mps are modular, You can choose rim,cup and this 3rd part(I don't know how to say that in English. You can choose materials too - titanium, stainless steel or silver

http://www.whf-mouthpieces.at" target="_blank" target="_blank

Everything I make is modular, and I make far more usable combinations than anybody else - I've been doing this a long time as a service to my fellow musicians - I'm a professional trombonist myself and this is my "day gig." See my antiquated website for more info.