Rare Item Ceramic Alto Clarinet Mouthpiece Nagamatsu INAX

There is noticeable dirt on the parts of the ligature that were in contact with the instrument due to use.
Please examine the photos for the condition and consider purchasing if you are able to accept it as is.
The product number is 4-23.

I have already sold my alto clarinet, so I would like to offer this mouthpiece to someone who can use it.