This is a Trum cor stop mute. While there is some soiling due to age, it has been used with care and there are no dents, including on the parts. This product retails for 38,500 yen. It was used to great effect in performances of Tchaikovsky's Symphony No. 6, Pathétique, 4th movement, for the 2nd and 4th horns, with stopped notes, and in scenes requiring a loud volume. The interchangeable bell flares were also helpful for adjustments and were very useful. This is a Trum cor horn stop mute, manufactured by Trum cor, which has been producing mutes for brass instruments for over 20 years. It comes with three different bell flares that can be interchanged to suit your preference. Material: Brass Made in: USA Accessories: 2 replacement bells (3 types total) I am willing to offer a small discount to someone who will take good care of it, so please feel free to inquire.