This is almost an extension of a 'Bonnie' Badge as was worn earlier by 201 Battalion.

This Beret Badge would have come out around 1990 when 201 Bn. same back into South Africa. They joined the South African National Defence Force and were re-named 31 Bn.
"Quartermaster's Comment":- See Dudley Wall's excellent book......No. 12 on Page 15.
It would have been worn up until 2004.......See Colin Owen No.3973.