Hi, Does anyone have any knowledge of Hirsbrunner Euph mouthpieces made by Brun Tilz NEA? I came across 2 used models, the 4G and the 2C. I am trying to find out the specs on these. Are they any good? What do they go for? A comprehensive list of all Hirsbrunner Euph and Tuba mouthpieces would be nice . I did not see them listed on D Werden's charts.Best Wishes everyone, John McKevitt