I purchased this about 15 years ago at a music store and used it for about a year before storing it in its case. There is some visual deterioration due to rust, but there is no wear on the baffle, so I believe the playing feel is not affected. Brand: E. ROUSSEAU Material: Brass, Metal [List Price]: ¥72,000 [Product Description] *From the official website Utilizing the latest CNC computer design and engineering, this product is machined from the highest quality brass. Its unique internal shape and gold plating create a powerful sound with a perfect balance of edge and warmth. Eugene Rousseau is a master of the modern saxophone world, having left behind numerous famous performances. He also served as a distinguished professor at Indiana University for many years, nurturing saxophone players around the world who have been influenced by him. Saxophone mouthpieces designed with Rousseau's extensive experience and brilliant ideas are widely loved not only in America but also around the world.