Sudan 1948 New Arabic 20p pale blue and deep blue, SG110aSudan 1948 New Arabic 20p pale blue and deep blue, chalk surfaced paper, perforations 13, upper marginal block of 4, SG110a. A superb unmounted mint positional block with full original gum. A stunning piece and a particularly attractive example of this famous stamp issue in this colour shade. The Camel Postman stamps of Sudan are considered by the famous printers De La Rue as the most satisfactory in their long history of stamp production and