A gonfalone or gonfalon is a vertically hung banner emblazoned with a coat of arms. William carries a gonfalon (banner) donated by Pope Alexander II. These arms appeared on a gold gonfalon and on the seal as well. Today, every Italian comune (municipality) has a gonfalon sporting its coat of arms. A gonfalon can include a badge or coat of arms, or decoration. The gonfalon has long been used for ecclesiastical ceremonies and processions. "Gonfalon" is a poetic way of referring to the pennant that both clubs battled for.