Original: Du Pré primarily played two Stradivarius cellos , the instrument of 1673 ( now called the '' du Pré Stradivarius '' ) , and the 1712 Davidov Stradivarius .
Simplified: One was a Stradivari cellos , the Stradivarius made in 1673 , and the other was made in 1712 and was called the Davydov Stradivarius .