cover 1879 envelope (opened out for display) to Shanghai bearing 3 ca. cancelled by "CUSTOMS/NEWCHWANG" c.d.s. (14.10.79), showing "CUSTOMS/SHANGHAI" c.d.s. adjacent and "SHANGHAE/LOCAL POST" c.d.s. (20.10.79) in blue on reverse. Only three internal covers have been recorded originating from Newchwang. Photo