Can not identify the handle

A friend from Chicago, IL says:
Hello,
I'm try to find a replacement for my window's handle/lock. The hand I have has a number of "2121 R1" and the lock I have is "2248". I need a white color. Please let me know asap so I can place an order
Thumbnail of the uploaded file named 20201212_203421.jpg
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Bob from SWISCO responded:

The crank handle looks like our 39-114L. Ultimately though, you'll want to make sure the spline it fits around has a diameter of 11/32". If you need new locks, this could be either our 38-095, 38-096, 38-138 or 38-139; the dimensions of the fork projection determine which you need. 

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