Banca monte dei paschi di Siena (Corporate Name)

Economic notes, 1995/1: t.p. (Banca monte dei paschi di Siena SpA); 1994/3: t.p. (Monte dei paschi di Siena)

Wikipedia, 27 Feb. 2013 (Banca Monte dei Paschi di Siena S.p.A. (MPS) is the oldest surviving bank in the world and Italy's third largest bank. Founded in 1472 by the magistrate of the city state of Siena, Italy, as a "mount of piety", it has been operating ever since.) http://en.wikipedia.org/wiki/Monte_dei_Paschi_di_Siena

New York times, 23 Feb. 2013: page B1 (Patron of Siena stumbles: 21st-century finance undoes Monte dei Paschi, oldest operating bank)

Since the days of the Medici family in Florence, 40 miles to the north, the banking house of Monte dei Paschi has rained wealth on the people of Siena. For 541 years, it has endured war, plague and panic, and it stands today as the world's oldest operating bank.