China.1909. Picture post card of 'The Laokai and Hokeou Border' addressed to 'Lao-Kay bearing Imperial Post SG 151,2c green tied by Hokow date stamp '4th Feb' with Lao-Kay Tonkin arrival '4/2'. Scarce item from Hokow across the river border to Lao-Kay (Tonkin). Superb. Ex Desrousseaux.