9mm Luger

I have two 9mm Luger cartridges with the following h/s’s
WCC 4 - 80 9 mm , copper FMJ
WCC 6 - 81 9 mm, copper FJM
I was told that they are contract rounds, if so who were they made for and is there anything else unusual about them.
Thank you Carolyn

According to a list of bunters made for Winchester, this style of headstamp, in many, many dates, was made for Malaya.