World Championship of Makes
(L to R): Nineteenth placed Pietro Bonfanti (ITA) with Gilberto Balocca (ITA) Citta dei Mille Alfa Romeo GTA is overtaken by Maurizio Polin (ITA) with L. Rogliatti (ITA) Lola T290 Ford who retired after three laps.
World Championship of Makes, 57th Targa Florio, Little Madonie, Sicily, Italy, 13 May 1973.