cover 3c Dull Red (11), margins to slightly in, faint horizontal crease at top, tied by blue "Andover, Mass. Jan 12" c.d.s. on very fresh cover to Corisco, West Africa, ms. "via No. 28 Centre Street, New York", black "Boston Br. Pkt. 14 Jan" exchange h.s. on reverse, cover believed to be an 1857 usage based on sailing dates, the 3c stamp pays only the U.S. domestic postage to N.Y., most certainly a missionary cover carried by hand from N.Y. to its final destination, very fine, with 1993 P.F. certificate, a fabulous destination and a unique usage, as such an extraordinary rarity that is worthy of the very finest collection photo