Rare 50’s Berg Larsen metal alto saxophone mouthpiece! Straight sidewalls, small round chamber, bullet chamber. Tip opening measures 0.103″. Denim finish on table, duck bill beak. Usually mouthpieces that sound great on tenor are only ok on alto in the same tip number, but if you like bergs on tenor you will love this on alto too. The tip opening plays much easier than expected for this number on alto. The tone is loud and lush, just like on tenor. Great projection and power while maintaining a moderately bright tone.