Greetings Swisco !
I have two broken coil balance springs , 1/2" wide, that appear to be the S152 Series spring.
The only identifier on the broken spring, both of them, is 6K, by the tang that fits into the screw in the coil balance
shoe. The window is just shy of 13 lbs, weighed with a digital luggage scale.
The coil balance shoe appears to be a 15-177, as the measurements match. The ones pictured are good, but will replace anyway.
The top spring perches and bushings are fine.
So I need your best guess for replacement springs for this.
Thanks in advance,
Mark
