Selmer (Paris) LT mouthpiece for alto saxophone. The LT stands for Larry Teal, the father of American orchestral saxophone. This mouthpiece was most likely made in the 1980's. The exterior looks like any other Selmer mouthpiece from that era. The LT differs from the more common S80 in that it has a small round chamber, rather than a square chamber. The LT only came in one facing, that which it's namesake thought to be ideal. It has a relatively small tip opening (.060"). Apparently Teal favored a close tip with a hard reed. This mouthpiece is definitely geared towards playing classical music, not jazz.