and "8½" manuscript rate markings. Photo" /> cover 1855 (20 April) folded E. to Hamburg (30.5 arrival), bearing 4a. vertical pair (both trimmed on extreme three sides and upper stamp with horizontal crease), cancelled by distinctive diamond of hollow dots; showing<I> "6¼"</I> and<I> "8½"</I> manuscript rate markings. Photo | Christie's