This is a vintage Brilhart Ebolin 2* mouthpiece for Bb clarinet, serial number 85005. The mouthpiece is in nice condition and does not look like it was ever heavily played. Its white bite plate area is in good shape and shows no serious indentations. The facing profile of the table, tip and side rails is in very good condition.
These pieces are ideal for jazz or wood wind doublers looking for something a bit more open with a bigger free blowing response. The tip opening on this piece measures .045”.