Hong Kong Treaty PortsCanton1888 (17 Mar.) a Q.V. 3c. stationery card to Kamerun per German mail via Hamburg tied by Canton straight line c.d.s. via Hong Kong (18.3), lower left showing red dater (18.4) cancelled, on reverse Kamerun (11.6) arrival c.d.s., take almost 3 months to arrived, possibly the only stationery card to Kamerun, Africa.