cover 1903 (21 March) red band envelope bearing C.I.P. 1c. pairs (2) both cancelled by "IMPERIAL POST OFFICE/NANZING" with transit/arrival c.d.s. adjacent and 1903 (9 Aug.) red band envelope bearing C.I.P. 2c. (2) both cancelled by bi-lingual "NANZING" in violet with Shanghai and Kiaochow c.d.s. adjacent. An interesting pair. Photo