cover -- 1875 (9 June) envelope from Copenhagen to Yokohama bearing 16ö. and 25ö. (2) Posthorns tied by despatch c.d.s. with boxed "P.D." alongside, the reverse bears a very fine strike of the type 2d Marine Sorter in blue dated "JY/11 19/75", with Bologna and Yokohama c.d.s. alongside; an attractive and desirable cover