Broken coil springs
Thanks for posting. I am afraid we do not have an exact match for this pivot shoe and coil balance assembly. I don't believe they've been made in some time. You may be able to use our Series 140 assembly as a replacement, but I cannot be certain. Take a look and see what you think. This assembly is 9/16" thick and 1-1/4" wide. See if that matches up with your old pivot shoe.
If you decide to try it out, you will need to weigh your sash so we can confirm which Series 140 strength option to go with. Give us that exact weight, and we can determine this for you. You will also need either a new 26-398 or 26-405 pivot bar, since these are the two pivot bars compatible with this balance assembly. You'll need to make sure that at least one of the installation hole measurements lines up with the holes on your sash. Let me know if you have further questions about all this.