Sash release lever replacement
Thanks for posting. We may be able to help, but we will need to see a version of this surface lever with the lower prongs as intact as possible. These levers are really distinguished by the length of those prongs, and the distance between them. If you can provide those dimensions to use, we'll do our best to see if we have a match. Keep in mind many of these internal style tilt latch configurations are no longer made--we have substitute options, but first let's see if we can find a match for this lever.
Thanks for getting back to me. The closest match we have is the 26-234 Surface Lever. The prong dimensions are close to what you report, but not identical, so double-check your measurements to see if this matches up.
If the prongs are not the same, to be honest your old surface lever is likely no longer available anywhere. Many of these internal tilt latches have been phased out over the years, and you may be better off seeing if you can convert your window to use a surface mounted tilt latch pair like the 26-228 and 26-229, or the 26-193 and 26-194. The video below shows how.
Great! Let me know if you have further questions, or need anything else.