Which Latin word appears on the emblem of the San Marino flag?

The state and war flag of San Marino is formed by two equal horizontal bands of white (top) and light blue with the national coat of arms superimposed in the center; the coat of arms has a shield (featuring three towers on three peaks) with a closed crown on top, flanked by an oak and laurel wreath, with a scroll below bearing the Latin word 'Libertas' (Liberty). The two colors of the flag represent peace (white) and liberty (light blue).

The current flag was adopted on 6 April 1862 by a Decree of the Supreme Council and since then, little but graphic details of the coat of arms and some proportions were changed. The Three Towers of San Marino are a group of towers located in San Marino. Located on the three peaks of Monte Titano in the capital, also called San Marino, they are depicted on both the national flag and coat of arms.