used alongside 10c Green and 5c Brown (68, 76), all tied by black grids to 1863 cover to Hong Kong, China (Heard correspondence), 30c also tied by "Philadelphia Paid 24 Paid Mar 6" credit, endorsed "Per steamer" and "Overland Route Via England", March 20 London transit and red "1d" British Colonial credit handstamp, backstamped Hong Kong May 20, very fine and attractive, 45c paid the rate via Southampton despite the Overland Route endorsement