A Bach cornet mouthpiece, model 10-1/2E. This is from the so-called "old engraving" era. The size feels slightly larger than a 10-1/2, and the cup depth is shallower than a 7E, similar to an F cup. The inner rim is quite rounded, and it feels similar to Yamaha's Vizzutti model, Marcinkiewicz's Bobby Shew model, or the Bergeron model. The shank tip is finished very thinly. This model is well-suited for E♭ cornets and piccolo trumpets. Recommended for those who switch from the signature models mentioned above. It's an old item, but it has seen little use and is in beautiful condition with no noticeable scratches.