cover 1924 (July) large unpaid envelope from Johannesburg to Lourenco Marques franked on arrival by 1917 Postage Due 50c. (33, including a block of sixteen) and 20c. on reverse of envelope, showing origin c.d.s. on face; it appears that several other adhesives have been removed, nevertheless a remarkable franking. Some faults as is to be expected of such an item