there are no numbers or markings on this piece of hardware

A quick learner from Guilford, Ct. says:
The window-crank assembly does not have any markings on it. It was made by Malta. Can you replace it, or do you know who might be able to? Thank you.
User submitted photo of their window hardware.
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Tom from SWISCO responded:
Thanks for posting. Please see our 39-027E and 39-028E to start. I believe these could match your operator, but make sure the dimensions are the same.
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