STOMVI Trumpet Mouthpiece 3C This is a trumpet mouthpiece from STOMVI, a Spanish trumpet manufacturer. STOMVI is a well-known maker used by world-renowned soloists such as Maurice André, André Henry, and Pacho Flores. It is silver-plated and the size is 3C. It feels like it's between a BACH 1-1/2C and 3C, with a depth between C and B. I felt that it was easy to control the tone, becoming clear with a strong breath and soft with a gentle breath. There are shank scratches, but overall it is in good condition.