Perantucci Tuba Mouthpiece PT-83+ Heavy Wall Model 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.

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 
Standard Large Shank for most European Models (recommended for most 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
 
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.