Thread: British "Cosh" or American "Blackjack"?

So cleaning out my father-in-laws house today, I came across this - it's about 8" in length and has C.C.C scratched on the handle.

He is a British Veteran of WWII in Italy, and then with the Occupying Forces '45,'46.

I believe it's referred to as a British "Cosh", or the American's call it a, "Blackjack".

This looks like it would it would turn your lights out snap.....