J. Thibouville-Lamy violin, Barnabetti model. 4/4 size. The J.T.L Barnabetti uses the finest selection of European tonewoods and features a one-piece Maple back and ribs with a broad-grain Spruce top. Its naturally rich orange-brown colour is accentuated with an oil varnish, masterfully applied by skilled luthiers using centuries-old techniques to ensure the Barnabetti violin looks as wonderful as it sounds