INCOMING & OVERSEAS TAXED MAIL; Range on leaves inc. 1952 env. to Madinare franked Australia ½d Kangaroo used in PNG with "INSUFFICIENTLY/PREPAID" h.s. on front and 2d, 1d & ½d Bechuanaland p.dues tied to front, 1972 large reg. env. to Cape Town franked Botswana 3c pair + 7c + 5c apparently posted out of course and with pair 10c S.Africa p.dues tied to front, 1976 S.Africa 2c meter-franked airmail env. to Gaberones with large circular "T 3/10" h.s. and Botswana 3c tied to front and other modern examples. (11 covers) Cross Reference : AUSTRALIA, POSTAGE DUE STAMPS & COVERS, PAPUA NEW GUINEA, SOUTH AFRICA (Image)