This is a very nice Beechler Diamond Inlay alto saxophone mouthpiece in a 6 small bore facing. These hard rubber pieces are a slightly brighter take on the standard straight ahead jazz alto concept. This on in particular is a small bore model and is a little bit brighter and faster in response compared to Beechlers medium and large pieces.
This one is in very nice condition. There are a couple small ligature scratches on the back of the body and other traces of light play wear, but nothing too serious.