Vintage Brilhart Tonalite Bass Clarinet Mouthpiece .071 tip opening

I do have to say that I dont know much about Brilhart clarinet mouthpieces... that being said, I would assume its around the same time as the Tonalin and Ebolin, when using plastics first became popular for woodwind mouthpieces... I dont think its been worked on, and Im not sure what the standards are for Bass Clarinet mouthpieces, but its labeled as a 3*...