Perantucci Tuba Mouthpiece PT-66 Silver Plated
 
These mouthpieces are all new old stock and also include the "Mr Tuba" stamped on the mouthpiece from the factory.
 
Perantussi say the following about this mouthpiece.
Model PT-66 is a traditional, German-style mouthpiece giving a clear and lively sound. It's deeper cup provides more volume with a slightly mellower quality than model PT-64. It is highly recommended for the F and Eb tubas, but is also useful for the CC and BBb tubas where quick response and a clear, vibrant sound is desired.
 
Cup: 32.5mm diam. Medium depth, bowl-shaped 
Rim: Width 8mm. Rounded inner and outer edges
Throat Bore: 8mm
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
 
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 they 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.