DENIS WICK HERITAGE series cornet mouthpiece. This mouthpiece features a distinctive thin rim combined with a thick cup, resulting in a quick response and a powerful tone. Model: 3B (DW3181-3B) Inner Rim Diameter: 16.75mm Cup: Medium cup (Although it's a V-cup, it's slightly rounder and easier to control compared to Denis Wick's 2 and 3 models) Plating: Silver / Rim and cup are gold Used only a few times and cleaned. There are two subtle marks on the shank. Will be shipped with cushioning material in the case.