USA
Colorado
Capital City:Denver
Former normal series (1977 - 1999), Rocky Mountains silhouette, 3 letters-3 numerals in 1982-92, PNP = Arapahoe county (Littleton)
Former normal series (1977 - 1999), Rocky Mountains silhouette, 3 letters-3 numerals in 1982-92, MDN = Boulder county (Boulder)