Broken spring

Thanks for writing in! I'm certain we have the replacements for this balance assembly but it looks similar to a few we supply. To narrow down the correct match, I'll need to see a clear photo of the bottom housing on the assembly. The window sash obstructs the view of the shoe cam.

Please let me know if you have any questions!

Thanks for the additional photos. You'll need the 15-087 Coil Housing Pivot and 15-086 Tandem Coil Housing to replace your housings. 

These are compatible with the Series 180 Coil Balance. Since your housings are marked with a 6 and a 7, you'll need the S180-06 and S180-07.

Detail of 15-087

Detail of 15-086