From GuitarPlayer.com:
The name Stradivari is typically associated with violins, violas and cellos. The instruments made by the celebrated Italian family in the 17th and 18th centuries are among the most rare and coveted orchestral stringed instruments in the world. But the Stradivari family also made guitars, though in much smaller number, which makes surviving examples even rarer than their counterparts. According to ForgottenGuitar.com, the Stradivari family “produced over 1,000 instruments, of which 960 were violins.” Yet, “a small number of guitars were also crafted, and as of today only one remains playable.”