Sure, that looks like our 39-323 cover along with a 39-114L handle. Look these over and see what you think.
If you need the operator itself, then I can't ID it from this photo. You'll have to remove it from the window so that we can see the whole mechanism in one shot.
A contractor from Milw. Wi says:
July 22, 2020
Sorry this is a semco window
Tom from SWISCO responded:
July 23, 2020
Thanks for clarifying. Did you still need the operator? If so, I still need the information I outlined in my prior post.