Our full double horns of the Europa series are built in the valve arrangement according to Herbert Fritz Knopf. The horns of the model series Europa are equipped with our medium wide taper length, as well as a fixed leadpipe. The most affordable entry-level model 63 is available exclusively in brass construction, including brass valve bushings. The model 66, available in three alloys, is equipped with valve bushings made of nickel silver. It can be upgraded with an A-stop valve (model 67) on request.