cover 1850 entire letter to New York, showing superb large "HALIFAX/PAID/NOVA SCOTIA" tombstone d.s. over-cancelled by large h.s. "7", 1854 local Halifax entire letter showing similar h.s. and manuscript "3", and 1851 entire letter to New York showing the rare small sans-serif "HALIFAX/PAID/NOVA SCOTIA" tombstone d.s. alongside h.s. "5"