cover 1866 (8 Oct.) entire letter from Calcutta to Mauritius, marked "par Str Simla via Galle", bearing 1865 8a. tied by small "Stamped" h.s. and superb "B/1" obliterator, showing "6d/TO PAY" h.s. with, on reverse, despatch and arrival (1.11) datestamps. Attractive