 To give it the old look he very often shaded off the varnish only at the base of the back plate.He used a large number of diverse models but principally those of Stradivari, Amatise and other models of Guarneri, Balestrieri, Guadagnini, Gagliano, Ceruti or other violin makers from Veneto (Venice) in the 18th century.He also utilized many others as chance would have it."