Hong Kong. (Treaty Ports). 1887. Envelope addressed to France bearing Hong Kong SG 37, 10c deep green (pair) tied by Shanghai date stamp routed via Hong Kong '19/3' with octagonal 'Poss. An. Paq. Fr No' date stamp on face in red and Lyon arrival '22nd Avril' on reverse. Lovely quality item paying the double letter rate to France. Scarce.