I just checked in Owen's book on SA badges and as far as South African badges go there are: Cape Mounted Rifles, SA Mounted Rifles, Durban Light Infantry, Northern Rifles, Eastern Rifles, Western Rifles, Southern Mounted Rifles, Northern Mounted Rifles, Rand Light Infantry and Witwatersrand Rifles as well as numerous old Cape units having the device in the centre of the helmet plates. All well illustrated in the book.
www.southafricanmilitaria.com . Have a great day. Andrew