Casement window handle

A quick learner from Ludlow Ma says:
Gear seems to be ok but handle doesn't catch to open or close window handle says truth patent pending and had # 45191
User submitted photos of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
Hello! Check out our 39-205. I think this will match what you have. Keep in mind this has a spline size of 11/32". If yours does, as well, then this should work.
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