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“Includes musical instruments that once were in Beethoven’s possession including the last fortepiano he owned, that by Conrad Graf; two square pianos; the 33-stop organ from the Church of the Minorites, Bonn, and his string quartet: violins said to be by Cremonese makers Giuseppe Guarneri, 1718, Niccolo` Amati, 1667, viola ? Vincenzo Ruggeri, 1690, ‘cello by ?Andrea Guarneri, 1712; and the Josef Zimmermann Collection of about 180 17th and 18th c. woodwind instruments.” –CIMCIM