Plastic Replacement window glass retainer

Thanks for posting. The closest match that comes to my mind is our 55-017. The shape is very similar, the first leg is 9/16", and the notch looks nearly the same; but the other leg we measure in at 13/32". Note however that we take this measurement a little differently from what you show. Compare to the diagram below, and let me know if you want to give this glazing a try.

Profile diagram of 55-017