cover 1896 (19 Sep.) opened out envelope from Shanghai to Bangkok bearing Hong Kong 10c. purple on red cancelled by Thailand Mail Steamer Marking circular grid with French P.O "SHANG-HAI/CHINE" c.d.s. alongside with "T" in inverted triangle crossed through in blue crayon, the reverse with "LIGNE N/PAQ.FR.NO.10" c.d.s. and Bangkok arrival c.d.s. Photo