Coil sash replacement

You should be able to reuse your double coil support clip since I do not see any damage. If you need to replace it, you can go with the 15-181. For the pivot shoe, our 15-180 should work in place of yours. this shoe is used with the Series 190 coil spring. Since there are no markings or stampings on your coil, you will need to weigh your window sash and get back to us with that weight number. 

Thanks for getting back to us with that information. Did you happen to find any numbers stamped on your coil spring? if not, would you be able to tell us the weight of your window sash? 

Thanks. I would recommend using two S190-540 springs on each side of the window.

If that's the only thing that has broken, then yes! Going by your photos, everything else seems to be in working order, so you should be able to reuse them. If they are broken in some way I can't see, though, let me know.