Denis Wick Euphonium Mouthpiece, ULTRA SM3U HEROS (Gold) supervised by Steven Mead. The rim feels slightly larger than the SM3U because it is rounder. The transitions between notes are very smooth, and it's easy to hit the sweet spot, making it a very helpful mouthpiece. Purchased directly from Euphonium.store (UK) for 49,378 yen. There are some scratches from use, but no major damage, dents, or shank distortion. It is in relatively good condition, but please understand that it is a used item. It will be shipped in the original box, but the box is dented from shipping from the UK. Instant purchase without comment is also welcome.