cover 1891 (26 Feb.) envelope (flap missing) registered to London, bearing 1d. claret bisect and 4d. grey-black (from the upper right corner with imperforate sheet margins), both with cork cancellations, marked "2" in blue crayon and showing "Crown/REGISTERED" h.s., Falkland Islands c.d.s. and London Registered oval d.s. (additionally tying both values); attractive. Rare with only three covers recorded from this mailing. D1. Photo