There are 5 original bassoons of Johann Scherer (junior) (1664-1722) and 2 copies based on Johann Scherer (junior) bassoons in the Hichwa-Rachor database. These 5 original Scherer bassoons are the only known Scherer bassoons in existence. He flourished in Butzbach from a1711 and worked with his father, Johann Scherer (senior) until the father’s death in 1707.
Johann Scherer Literature
Dart, Mathew. The Baroque Bassoon: form, construction, acoustics, and playing qualities. PhD thesis, London Metropolitan University, 2011. pp. 219-224, 506-509.
Dullat, Günter. Verzeichnis der Holz- und Metallblasinstrumentenmacher auf Deutschsprachigem Gebiet von 1500 bis Mitte des 20. Jahrhunderts. Scheider, 2010.
Jansen, Will. The Bassoon: Its History, Construction, Makers, Players and Music. Frits. Knuf, 1978 Vol. 1, p. 478.
Waterhouse, William. The New Langwill Index. London: Tony Bingham, 1993.
Young, Phillip. 4900 Historical Woodwind Instruments. Tony Bingham, 1993.
Young, Phillip. “The Scherers of Butzbach”. The Galpin Society Journal, Vol. 39, (Sept. 1986), pp 112-124.