I recently came across a few Minick Tuba Mouthpieces.

1- Model X

2 Model XU's

Does anyone have any experience with these ?

The Owner is telling me the inner rim dimensions are

XU 1.364" ==34.64mm

XU 1.361" = 34.569mm

X 1.373" + 34.87mm

A Perantucci PT 88 is 33.5 mm

This is considered a very large Tuba Mouthpiece

Seasons Greetings John McKevitt