Minick Tuba Mouthpieces

[johnnymack]

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