Laskey 28F Tuba Mouthpiece - European Shank, Silver Plate.
Mouthpiece has only been used a handful of times and is in great condition.

Specifications from the Laskey website:
28F European (EU) Tuba Mouthpiece:Inner Rim Diameter (Rim ID): 32.51 mm Outer Rim Diameter (Rim OD): 47.67 mm Cup Design: Mid-shallow bowlThroat ID: 7.92 mmBackbore ID: 11.86 mm
Cheers!