There are no distortions or dents. It has been treated with GAT Custom Brass acoustic processing (¥6,600). The rim was too round, so there is no engraving. [Model] 52E2 [Cup Inner Diameter] 25.91mm [Features] With a very deep "E" cup and a narrower, more rounded #2 rim, this mouthpiece is an ideal symphonic choice for robust players. It's also a good choice for euphonium players who need more cup volume than the 52D. [Shank] Large shank (for Large Bore Tenor Trombone, Baritone or Euphonium) Silky Trombone Euphonium