Hong Kong Covers and Cancellations Marine Sorters — Type 2; 1876 (30 Aug.) Swiss 25c. postal stationery envelope to Yokohama " via Brindisi" , uprated with 50c cancelled by Basel c.d.s. and bearing, on the reverse, Brindisi transit (1.9), a fine strike of the Marine Sorter type d dated "OC 1/9 76" and British Post Office Yokohama arrival c.d.s. (16.10); fine and very scarce. Photo