1879 5c on 18c Lilac Yellow Postcard Stamp SGP2. The item "Hong Kong 1879 5c on 18c Lilac Yellow Postcard Stamp SGP2 Fine Mtd Mint" is in sale since Sunday, July 7, 2019. This item is in the category "Stamps\British Colonies & Territories\Hong Kong (until 1997)". The seller is "stuacy" and is located in Henley-on-Thames. This item can be shipped worldwide.