The modern Selmer Paris Soloist Alto Sax mouthpiece, inspired by the original Soloist design popular in the 1950s, stands out as one of the most versatile options. Featuring a distinctive "horseshoe" chamber, this mouthpiece produces a larger and richer tone compared to the traditional S80 model while maintaining easy control for symphonic purposes. Available in facing sizes C*, C**, D, E, and F, with the larger tip openings associated with later letters, it caters to various preferences. The C* is favored by symphonic players, while the E is a top choice for jazz musicians seeking excellent control and tonal core. 
Special order the facing sizes. 
This particular one is C* facing.