South Africa MKII used by The Netherlands BB

This is my latest addition to my collection. It is a South African made MKII, refurbished for use by The Netherlands "Bescherming Bevoling".
Several details on this helmet show it is a South African made MKII.
The method used to rivet the chin strap lugs to the helmet.
The three holes drilled in the back of the helmet.
There is no text stamped in the metal.
 
The liner is Dutch made post WW2.
 
I have decided to name this a South African MKII.
Some day I hope to find a Soutn African MKII in its Original condition.