Sierra balance series

Hello,

We'd be happy to help but the stamp code only indicates the strength of the spring, but not the correct replacement. We would need to start by seeing detailed photos of both end fittings of your balance fully removed from the window, as well as the clip at the end of the pulley cord, to narrow down your options. Thank you!  

Thanks for getting back to us. We just sent over an order link and price quote for you to review. Take a look and let us know if you need anything else.