This is a Denis Wick mouthpiece, also used by Roy Hargrove. Purchased new and only test-played, it's practically new. The model number is 4C, a versatile and easy-to-use size, and I think it best represents the characteristics of Denis Wick. The inner diameter is about the same as a Bach 6C to 5C, but it's flatter, which helps with endurance. The cup is a slightly shallow C cup, with a slight V-shape. It has the warm tone typical of Denis Wick, but also possesses a sense of speed, making high notes very easy to play, and it's a wonderfully balanced and popular model. New domestic retail price: Approximately 20,800 yen (Shipping is unavailable from December 26th to December 28th, 2025. Shipping will be on December 29th. Thank you for your understanding.)