Perantucci Tuba Mouthpiece PT-82 Silver Plated
 
These mouthpieces are all new stock and some also include "Mr Tuba" stamped on the mouthpiece from the factory.
 
Perantucci say the following about this mouthpiece.
Model PT-82 provides a unique balance of tonal richness and ease of response for musicians who prefer the comfortable blowing qualities of a medium-large mouthpiece. Recommended for large tubas when fast response and tonal clarity are required.

Models PT-62, 72 and 82 use unique cups based on modern realizations of classic German design. They are well-rounded and provide a dark centered sound with strong projection.

PT-82 CLASSIC GERMAN CUP
 
Cup Diameter: 32.50 mm, well-rounded large depth
Rim: 8.00 mm, rounded rim with slightly sharp inner edge.
Throat bore: 8.20 mm
Resistance: Moderate to open 
Large Shank standard European for most modern instruments
 
Please note - For mouthpieces purchased online I am not able to offer trials - if you are looking to try this mouthpiece, please contact Mr Tuba at sales@mrtuba.com
 
These mouthpieces are all new stock.  They may have the odd mark on the shank where they have been inserted into an instrument in-store and the box maybe a little tatty, but the are all new stock.
 
I find mouthpieces impossible to take photographs of due to the reflections, so the image shown in the stock image from Perantucci.  I am happy to supply additional images if you send me a message.