"1/10", Gibraltar transit c.d.s. (1.3) in blue, "4R" h.s. (additionally tying the 1a.) and, on reverse, "SINGAPORE/P.O." c.d.s. in red, San Roque Cadiz (2.3) and arrival (7.3) datestamps. A rare and most attractive four colour franking illustrating the 15a. rate, effective 24 July 1858. Photo