Broken window casement crank handle

Brand “Interlock” on window operator. Picture shows that one side of the crank handle hinge is broken.  Only the handle is needed but is best to also get the circular crank part of the hinge because the white paint is chipped. Note the curved shape of the handle end (which rotates) which is different than other round handle ends. Ours looks like maybe an older version of a current Truth Nova handle that has a similar shape.