Bass Clarinet Mouthpiece Selmer Focus

Selling because I purchased a new mouthpiece.
I used this as my main mouthpiece for about a year.

The original box and pouch are not included; only the mouthpiece will be provided.

There are stains from the ligature (see images 1 and 3).
I enjoyed using this mouthpiece as it made it easier to play high notes, but please understand that usage feel can vary from person to person, and these are the impressions of an amateur hobbyist.

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