One wonders why they came out with a 'Second Type'. The First Type was virtually the same save for what looks like a small gold line around the edge.

A very modern flash for the Signals.........See Owen No. F 828.........Well away from the traditional design of their Uniform Badges.
"Quartermaster's Comment":-  This one is virtually MINT and is the 2nd Type for the South African School of Signals.
I take it that it would have been worn on the felt arm.