Thank you for viewing. This is a KING trombone mouthpiece, M31, for small bore trombones. It is a famous mouthpiece, as it was used by J.J. Johnson. There is some plating wear on the rim, body, shank, and shank end, as well as small scratches and scuffs. There is a crack in the shank end. There are no major scratches or dents that would interfere with playing. Please refrain from comments asking for a price reduction. Immediate purchase is OK. If you are interested in used or new mouthpieces, please search for Net Brass. net-brass.com