Lemco window crank parts

Thank you for your patience during these busy holidays. I'm afraid I cannot identify what you need based on the given photos. In order to make a recommendation, I will need to see a clear picture of the following: 

• The screw pattern, both top and bottom, visible in the same photo
• The link arm itself, detached from the hinge and visible without obstruction

Please let me know if that's possible and we can work from there.