cover 3c Dull Red (11), horizontal pair (placed vertically), margins to slightly in, tied by "Fayettville, Vt. Dec 27" c.d.s. on 1856 folded letter to Melbourne, Australia, faint red oval transit on front, black "Boston Br. Pkt. 31 Dec" exchange h.s. on reverse, faint red "Ship Letter ? Free MY 56" oval h.s. on reverse, red ms. "5" rate on front, this cover represents a 1c overpayment of the 5c rate to Australia by private ship via N.Y. or Boston, the balance due paid on arrival, very fine, a rare usage to Australia paid at the private ship letter rate photo