Matching up this folding crank, OP06-1620

A quick learner from Washington DC says:
I'm having difficulty matching the crank and mount. The number inside the handle is: OP06-1620.
User submitted photos of a window operator handle.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
How about our 39-205? This is a folding crank handle with an 11/32" spline. It looks a little different, but if your spline is the same size then it should work for your window.
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