cover 1896 (26 July) envelope (small tear at upper right) from Tientsin to London bearing 20pf. tied by Shanghai c.d.s. (31.7) and showing, on reverse, Tientsin chop (Type VII), "CUSTOMS/TIENTSIN" in blue (26.7), "CUSTOMS/SHANGHAI" (30.7) and red arrival d.s. A fine and rare combination. Photo