Mystery WC-CC badge

[25RF]

I am wondering if anyone can help in identifying this badge. A friend purchased it quite some time ago as part of a collection of WW1 badges, but has never been able to ID it. Judging by its construction, it appears to be a local/field made example and is made from solid nickel and brass. Its shape would suggest that it may originate from India, North Africa, or the Middle East but the inclusion of the stamped “WC-CC” initials would seem to indicate a Western connection. Stamped into the slider on the reverse is a small maker’s stamp with the initials “SM”. It is 34mm (1 1/3”) long not including the slider. Any help would be gratefully received.