correspondence to Cadiz care of Mr. Power at Gibraltar, bearing 1a. brown pair and single and 4a. black on blue glazed paper strip of three, each cancelled "B/172", showing red crayon "1/10", Gibraltar c.d.s. (11.8) in blue and, on reverse, "SINGAPORE/P.O." c.d.s. in red. A rare franking illustrating the 15a. rate effective 24 July 1858. Photo " /> cover 1859 (30 June) entire letter ex the<I> "Matia"</I> correspondence to Cadiz care of Mr. Power at Gibraltar, bearing 1a. brown pair and single and 4a. black on blue glazed paper strip of three, each cancelled "B/172", showing red crayon<I> "1/10"</I>, Gibraltar c.d.s. (11.8) in blue and, on reverse, "SINGAPORE/P.O." c.d.s. in red. A rare franking illustrating the 15a. rate effective 24 July 1858. Photo | Christie's