Older casement Window operator

A home owner from Newark, DE says:

I was unable to take it apart at this point. However there are no numbers or name shown on the exterior of the operators. These would be most likely from the early to mid-70s. If you could recommend some thing that would be as close as possible that would be greatly appreciated.

Regards

Pete

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Tom from SWISCO responded:

Hello, Pete. This is a very old style operator, but I think you could possibly get our 39-020 and 39-021 to replace these. Look them over and let me know if you agree!

Dimensions for 39-020
Dimensions for 39-020

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