Certainty window parts
Looks like you have the old Certainteed brand coil balance assembly. They no longer make this, but we still may be able to help.
Start by looking over our 15-192 pivot shoe, which is the modern Certainteed brand replacement shoe. The design is a little different but I have had customers in the past tell me that they got it to work after grinding down the front of the face, which sticks out just a little too far for this older window. You may also need to reuse the center metal cam, since the new one may not fit with your existing pivot bar. The compatible spring is the Series 170. The covers that retain the springs, however, are obsolete. You must reuse the originals as they're not made anymore.