LOT 95. Sotheby’s, 4. November 98, abgerufen am 22. Oktober 2010: „Description V.F. Cerveny & Sohne (fl Konniggratz, 1842–1946) A baritone horn Koniggratz, circa 1900 brass tubing and nickel mounts, four rotary valves inscribed V. F. Cerveny & Sohne zu Koniggratz in Bohmen also stamped on the garland 1.T.J.R.2. length 31 in., 78.8 cm.“