That begs the question - where (and by what company) was the other tailpiece made?The German one was made by "Johann Müller & Sohn"
Possibly moved from plated brass to plated zinc alloy (ZAMAC)?I'm assuming they are all cast as they are all nonmagnetic, (except for the non-hinged tailpieces). The German ones are a lot heavier. Could they be plated brass?