This is a very rare H2 by Marcinkiewicz. As the "H" indicates, it's a Helberg-style mouthpiece with an inner cup diameter of 33.1 (measured) and a throat of 8.4 (measured). It has a somewhat deep cup. The rim design is excellent, providing a good response and increasing the vibration to the instrument, giving the impression that the sound projects far. There are no dents, and it's in very clean condition.