1868, Washington 10c. green and horizontal pair, Lincoln 15c. black with mute ring cancel and adjacent cds. "NEW YORK" and matching "10" in circle on orange buff double-weight cover to Trondheim Norway, endorsed "via Hamburg or Bremen paid" at bottom left, carried by the "New York" of the NDL from New York to Bremen arriving on Feb. 19th. with boxed "BREMEN 16/2 68 FRANCO" and matching, since the letter was treated as a double-weight letter, "Weiterfr. 4 Sgr." applied. 10c. adhesive applied over edge. Small tear beneath adhesives. An exceptionally rare and attractive 1861 issue franking prepaying the rare North German Union Direct Mail rate to Norway, perhaps the only known double-weight cover