Broken balance clip

A handy person from Raleigh, NC says:
A home inspector found what appears to be a broken detent clip. There is no clear marking as to the window manufacturer, etc. Any information or direction is greatly appreciated.
User submitted photos of window hardware.
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Paul from SWISCO responded:
Hello! Looking at your broken coil spring support, it looks like our 15-204. I know it doesn't have the two screw holes, but it should work with just one. Keep in mind that his support is for a 3/8" coil spring. If your springs are 1/2" instead, see our 15-150D.
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