Searching for American craftsman coil balance #6 and#7

Thanks for posting. This looks like a 15-087 Pivot Shoe and 15-086 Tandem Housing. This setup uses Series 180 Coil Balances. You have to choose spring weights for the replacement coil balances. For this particular balance system, the stamps on the housing and shoe aren't always reliable to go by. Instead look for stamps on the old coils themselves. If there are none, or you're unsure, give me the exact weight of the window sash that these springs support, and we can work it out for you.

Series 180 coil balance diagram