This is a CE Winds Gold Genessis 10 metal Tenor Saxophone Mouthpiece. This model was produced from 2008-2012. The mouthpiece is in great condition, rarely used, like new. Tip,rails and table are in great condition and it plays with no issues. Due to my gauge it has .107" tip opening. Please check YouTube. There are a lot of videos with this mouthpiece.
lots of videos on YouTube

Thanks for looking