Used Warburton 5B-.277 Large Shank 2-Piece Trombone Mouthpiece

Used Warburton 5B .277 2-piece large-shank trombone mouthpiece w/ B3 .277 backbore, very good condition. Bore size of both top and backbore is .277", which is slightly more open than the standard model, rim inner diameter is 1.060". Rim his light surface wear but no plating loss. Shank has some insertion wear and a small area of plating loss as well as some very slight unevenness in the shank opening, but nothing that affects playability.
UTB-104