CGH, Natal, OFS, Transvaal and Zululand: Combination Covers
The cover shown has the very substantial franking of 5s/8d, so presumably contained some valuable items or even currency notes,
Most combination covers which include the previous four colonies and Zululand fall into four categories which can be derived from those defined (for stamps) by Robemark (Robemark Catalogue Handbook, 1980/1): 1. Pre-Union: covers with stamps of the colonies and Zululand used before 31 May 1910 (for CGH stamps this applies to usage of Cape stamps before 7 January 1910) 2. Unofficial Interprovincial. ...