This is a mouthpiece for a French horn. The rim and inside are gold-plated. I bought it for low notes, but I ended up not using it much. I think the tone is very good. A small discount is possible. It will be sterilized and cleaned before shipping. Manufacturer: Tilz Model Number: McWilliam 1 Retail Price: ¥19,800 Plating Cost: ¥18,700 Rim Inner Diameter: 17.5mm Bore Size: 4.4mm Cup Depth: medium deep Rim Thickness: medium wide Shank: European