Fort Benton, Montana. 4 different style postmarks on cover and three 1¢ postal cards; including first (S&D type 1) postmark in blue on cover franked with 3¢ Banknote, postal cards with 1880 magenta octagon (type 4) with star in circle duplex, 1881 blue (type 5) postmark with wheel-of-fortune duplex & blue cds (type 6); mostly readable strikes, F.-V.F. Estimate  $150 - 200. $0 (Image)