I was very excited when Hoyer told me that they were purchasing an original Geyer double horn so that they could study it and come out with a true modern copy which was affordable! This is the newest model in the Hans Hoyer line of professional horns, made in Germany by B&S. This is a full double horn in Bb/F, and can be set to stand in either key. The Geyer model has a smaller throat bell than the Kruspe style instruments in the Heritage and Bloom lineups. But the body is a larger diameter, with broader curves, offering less resistance.