SOUTH AFRICA 1925 Air 9d green variety, SG21varSouth Africa 1925 'Air Mail' 9d green, lower left corner block of 4, with lower right stamp (R12 8) showing "Broken R" in "SUIDAFRIKA" (Reference: Union Handbook 19 V3), SG21var. A fine and fresh mint positional block with original gum. A scarce variety, particularly within a multiple. An attractive airmail stamp depicting de Havilland DH. 9 biplane, a British single engined biplane bomber developed and deployed during the First World War. South