This is a Martin mouthpiece, size 7, from the same script font era as the Martin Committee. It weighs around 115g, similar to AR Resonance heavy or Monette mouthpieces. The Committee is front-heavy, so surprisingly, a heavier mouthpiece feels better balanced in hand. There's a small area near the shank end that's starting to crack but hasn't opened up and doesn't affect use at all. In terms of size, it's between a Bach 6C and a 10 1/2C for me. *Of course, the trumpet is not included.