jalousie window (1970s) locking mechanism

A home owner from Florida says:
I am looking for replacement parts for my 1970's era jalousie windows. picture attached.
Thumbnail of the uploaded file named jalousie lock.jpg
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Casey from SWISCO responded:

Thanks for sharing your photos with us. It's hard to tell exactly what you're showing us with the part installed. From what I can see, your part seems to show some resemblance to our 39-537. Take a look. Get back to us and let us know if this is the set you're looking for. 

39-537 : Lock Assembly Pair
Lock Assembly Pair
39-538 : Nylon Cam Lock Pair
Nylon Cam Lock Pair
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