Austin Custom Brass Trumpet Standard Papa Bear
Austin Custom Brass Trumpet Standard Papa Bear, Trumpet Mouthpiece, Standard series, Outer diameter: 27.18 mm (1.07""), Inner diameter: 17.37 mm (0.684""), Cup shape: Deep bowl, Relative cup depth: 8.5, Shape of the backbore: OO, Silver-plated, Comparable to Laskey 84D or Warburton 2D