cover 1929 (July) a commercial cover from Shantung to Shanghai franked by pair of Mausoleum 4c. tied by Tientsin c.d.s., the reverse wtih "Passed by Censor" label tied by a fine strike of Tientsin Civil Censor no.9 circular chop in violet plus faint Shanghai roller cancellaton. Scarce censorship during the warlords conflict in North China