This is a vintage Bob Dukoff Hollywood Metal mouthpiece for alto saxophone. This was the second series of BD Hollywood mouthpieces made by Dukoff. A good portion of the originla Gold Plating has worn off, but the Silver Plating that sat underneath is still very present, creating a really cool look to the mouthpiece. The piece is stamped an original 4 and plays great with a bright, edgy tone. Very David Sanbornish. These are great vintage mouthpieces, and you don't see to many on Alto. A really cool metal mouthpiece.