Perantucci Tuba Mouthpiece PT-83 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-83 offers comfortable resistance and ease of tone production. The narrow rim provides quick response. The tapered cup provides substantial volume enhanced by a rather large throat bore with the shank bore matched for resonance and efficiency.

An ideal mouthpiece for CC and BBb tubas, works particularly well on medium-bore instruments and not only for young players but also for those who use large instruments.

Also available in the heavy shell configuration, Model PT-83+.

PT-83 PERFECTION IN A MEDIUM-LARGE CONFIGURATION

Cup Diameter: 32.00 mm, medium depth with funnel shape
Rim: 7.50 mm, moderately rounded with sharp inner edge
Throat bore: 8.60 mm
Resistance: Comfortable 
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.