This is a Willie's Ländler 2 GP prototype mouthpiece for large-bore trombones. This mouthpiece is gold-plated. It was made to match a Lätzsch, but I think it can be played well from top to bottom even with an American-style trombone. It's suitable when you want to play the upper register comfortably. This is a prototype before the product was commercialized. The weight is slightly lighter in the commercialized product. This one has a more solid feel and a bit more resistance, but I think you can get a dense, tight tone across the entire range. There are scratches on the shank and small plating imperfections, but there are no major dents or scratches, and I think it's still in usable condition. Please check the photos for details.