A friend of mine was kind enough to give me a Broadus S3 alti rubber mouthpiece in original condition. I dunno what S3 stands for. Anyway, it is a nice looking + playing mouthpiece. I know the hard rubber is of high quality. Although the tip opening is about 0.06", I can get all the low, and high notes without much hassles. The tone is sweet and melodic, and not particulary dark. Given enough air pressure, it can be quite powerful. A nice vintage piece that is undervalued - I believe.
BTW, I intend to open up the tip a bit
