cover 1891 (25 Feb.) envelope registered to Halifax, Nova Scotia bearing 2c. Jubilee pair [8/2] with 1891 7c. on 10c. and 1891-92 10c. purple on red tied by "AMOY" type E c.d.s. and showing large "R" in circle alongside and, on reverse, San Francisco, St. John and Halifax c.d.s. This is one of the most important and desirable of the Jubilee covers and an outstanding exhibition item. Photo