Awning window hardware replacement

A home owner from Chicago says:
Looking for a part to replace the opening mechanism in the pics. Please let me know if you need better pics or measurements.
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Tom from SWISCO responded:

I don't believe your operator is made anymore, but you may be able to use something like our 39-390 or 39-389 as a substitute. Look these two products over and let me know what you think.

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