Lauren from SWISCO responded:
October 12, 2023
Hello, thank you for posting, Your balance assembly resembles the 15-180 pivot shoe that is compatible with the Series 190 coil springs. For a coil stamped with the #5, please review the S190-540 coil spring. With one coil on each side, the sash weight should weigh 10 pounds. Also review the 15-186 balance clip and 15-182 bushing. Compare all dimensions and let us know if you have any additional questions! Alternate image for 15-180
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