Window parts

I need window crank mechanisms both right and left for an old window. I am so lost with this quest my dear husband has put me in charge of. Your company can be my heroes if you can figure this out. I have included pictures of one of the cranks. I don't know if this is a right or a left since he only grunted "get one left, get one right, please dear". Man of few words, my prince. Can you help?