ニューストンライン 152 テナートロンボーン用カップミュートの高価買取価格

The product you mentioned appears to be a cup mute for a tenor trombone, specifically from the brand New Stone Lined (ニューストンライン). The model number is 152, and it is likely designed to modify the timbre and projection of the trombone sound, making it softer and more muted.
Cup mutes are commonly used in various musical settings, particularly in jazz and orchestral music, to achieve a different sound quality. If you need more specific information about this product, like features, pricing, or where to buy it, please let me know!