South African shoulder titles

[milhistry]

During the interwar years, South African other ranks wore bi-lingual shoulder titles. Often they were oval-shaped with the English and Dutch or Afrikaans abbreviation placed at the top and bottom of each other so each language appeared on each shoulder. It would be interesting to know when this practice started (my guess is the WW1 South Africa/Inf/Zuid-Africa titles worn in France) and how many interesting varieties members may have.

Also, does anyone know where I might obtain the following SA shoulder titles?

"Q'SC/K'DK"

"SACMP/SAKMP"

The first one, one should think, would be as common as mud as several thousand troops served with Q'Services Corps durring WWII but I am battling to find any. I realise they may be "less desirable" than some of the famous regiments for example, and might not therefore be all over ebay, but perhaps somebody has a jam jar full of them in the garage? :)