VINCENT BACH Trumpet Mouthpiece 1C This is a mouthpiece from BACH, a standard trumpet manufacturer. The size is 1C. It's a very popular mouthpiece, used by many in orchestras, concert bands, pop music, and marching bands. It's in basically good condition, but there are some scratches on the shank and some slight plating wear, so please check the photos. There are no other scratches or dents that would interfere with playing.