Window Cranks

Quick Learner from michigan
windows are 30 years old and only have two working cranks. there are no markings on the windows or cranks. hope someone can help identify these so i can get some replacements before i have to replace all the windows. there are 20 windows that have these cranks. thanks in advance
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Tom
Tom from SWISCO
SWISCO
Expert

Thank you for your patience in this matter.  I am confident we can get a replacement for this operator, but it would ultimately depend on the style of the link arm. I cannot make that out from your photos. I recommend starting by looking at our 39-074, 39-411, or 49-419 to see if any of these match up to yours. 

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