1960's 9" white casement window operator

A home owner from Portland oregon says:
Hello,

This to me looks like a right hand 9" casement window operator. The measurement for the outside holes are 4 7/8" and the inside holes are 3 7/8". It is 3/4 thick/high top to bottom as it mounted at the bottom of the window.

Thank you,

James
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Casey from SWISCO responded:

Hi James, Thanks for posting. This looks identical to our 39-001. The only difference is the 4 3/4 outside installation screws but the 3 7/8" match perfectly. Take a look and let me know what you think.

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