His is the last version of the Air Flow mouthpiece, shortly before Selmer switched to the Soloist model. The mouthpiece is very similar to the Soloist. It has a similar sized chamber, but with slightly rounded side walls and a round chamber. It plays very similarly to a good short shank mouthpiece, but there's a bit more focus and roundness to the sound. These mouthpieces are in very high demand and it's easy to see why with this one.
The facing is original and the tip opening measures. I invite you to try this mouthpiece risk free. The item "1950's Selmer Air Flow Alto Saxophone Mouthpiece C Facing, From SBA Era" is in sale since Tuesday, March 14, 2017. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Band & Orchestral\Saxophones".
The seller is "dc_sax" and is located in Alexandria, Virginia. This item can be shipped worldwide.