.610″ Signature Series Eth Trumpet Mouthpiece $115.00 – $140.00 Legends Brass Signature Series Eth – designed for the legendary John Eth. The inside rim diameter is .610″ with good undercut, the cup is a flat bottomed bowl shape, and the backbore is the very focused Legends Manhattan. This mouthpiece is a great set up for control in the upper register! Select options