cover 1916 (23 Mar.) pink envelope registered to Shanghai bearing, on the reverse, Junk 1c. and 7c. tied by Shunking bilingual c.d.s. dated "year 1" of the Hung Hsien monachy period, Wanhsien (also "year 1") and Shanghai transit c.d.s. alongside with another arrival on front. By the time this letter reached Shanghai the post office had reverted to the old year-date system and both Shanghai c.d.s. show the normal republic year 4. Scarce. Photo