We are in need of replacement mechanisms for Bonneville casement windows

The crank mechanisms for Bonneville windows in our home have failed. We need replacements for them in order to use the windows. I have uploaded some pictures and have measurements for what we need. The only thing I can see on the part is "Truth", no other markings. Date on the back, made in USA. I would like to order a couple of them first to make sure they work before ordering all we need. I have uploaded some photos but would also like to speak to someone before ordering to make sure we get what will work in our application. Thank you. Anita