cover 1897 "ON POSTAL SERVICE registered cover from Shanghai (17.7) to Woosung (17.7) showing "R" handstamp as well as appropriate c.d.s.; also 1933 "ON POSTAL SERVICE" cover used locally in Antung showing bilingual "SERVICE DE POSTES" circular cachet and on reverse oval "FIRST CLASS POSTMASTER/"ANTUNG" d.s. (20.3), both in blue