This is a “new old stock” Florida vintage Slant Sig Otto Link Tone Edge Alto mouthpiece. The piece is completely original and fresh out of the box. It was found in the bottom of a storage box in an old music store that went out of business. A real find!!! It's not often that you find a mouthpiece that has been completely preserved in original condition for over 50 years. This is a great example of what a brand new Otto Link from the late 1950's would have looked like.