cover 1916 (Oct.) envelope registered to England bearing 1915 (Sept.) ½a. pair, 1a. and 2½a. pair, all uncancelled though showing three transit d.s. on reverse confirming it's passage through the post, and 1916 (June) envelope (faults) to Zanzibar bearing 1916 (Sept.) uncancelled 1915 (Sept.) 1a. and with arrival c.d.s. alongside