As of 1902, 540 violins made by Stradivarius were known to exist. Also: 12 violas, 50 cellos--and two guitars. According to:http://www.geocities.com/ganesha_gate/strad.html As
… of 1902, 540 violins made by Stradivarius were known to exist. Also: 12 violas, 50 cellos--and two guitars. According to:http://www.geocities.com/ganesha_gate/strad.html The above is inaccurate. It is known that Antonio Stradivari made about 1100 instrument is his lifetime, about 540 of which were violins; not all of the violins survived. As of 1902, about 650 Stradivadi instruments were know to have survived and been authenticated, but only about half of them were violins. (Stradivari also made violas, cellos, guitars, and harps). The total number of authentic Stradivarius violins still in existence at present is probably something around 300 or fewer. (MORE) 
