These knives were issued to Special Forces during WW2.
They were manufactured in Australia and New Zealand. I am not yet sure of the extent of use of the NZ knives by Australian Special Forces.
Known Australian Manufacturers:
Greg Steel in Melbourne.
There are several unmarked versions.
Total production of these knives is not known.
The Australian Knuckle Knives were made with both Mazak (Die Cast) and Brass grips. There were several different patterns.
They were issued with a leather sheath with a security strap to hold the knife securely in place.
I have recently discovered that Knuckle Knives were used in Korea.
The image below shows a group of Australian Soldiers from the 3rd Battalion, The Royal Australian Regiment (3RAR), resting and trying to keep warm by a fire. Scattered around them is some of their equipment. To the left hand side of the soldier in the centre of the image is a knuckle knife. Apparently within easy reach if he needs to grab it. These soldiers appear to be well rugged up against the cold.