Post Paid chop in Chinese. A fine cover and a very early use for this. Photo" /> cover TIENTSIN: 1883 (3 Apr.) printed envelope bearing a fine strike of fancy framed oval "TIENTSIN CUSTOMS/MAIL MATTER" h.s. in purple, reverse bears "CUSTOMS/TIENTSIN" c.d.s. and framed<I> Post Paid</I> chop in Chinese. A fine cover and a very early use for this. Photo | Christie's