Greg Black trombone mouthpiece, size 5.75, New York model. For large shank. - Brand: Greg Black - Model Name: New York - Size: 5.75 This is a Greg Black mouthpiece. I purchased it about a year ago, but I no longer use it, so I'm selling it. Here is a link to the seller's website. Please check the specifications here. https://www.joybrass.com/smartphone/detail.html?id=000000002555&category_code=ct163&sort=order&page=1 The description at the time of purchase stated that the rim was platinum and the body was gold plated, but it's quite thin, so I'm not sure about that. It's more like, "If you say so..." There are some minor scratches, but there are no problems with normal use. You can get a thick and rich sound with a trombone, and an acquaintance who plays the euphonium tried it out and said it was a very easy-to-play mouthpiece. I will clean it before shipping. Regarding price negotiations, please keep it within a reasonable range. I plan to lower the price while keeping an eye on things. Thank you.