Balance spring

Thanks for reaching out! I'm confident we can provide a replacement for this balance. Although, I will need to know the exact weight of the sash (the window the balances are supporting) to determine the correct stamp option for the replacements.

The stamp on your balance does not cross-reference with our stamp rating system, unfortunately.

Please don't hesitate to reach out with any additional questions you might have!

Thanks for confirming. I believe the length of the metal channel should be 33". That said, you'll need either the S380-33 or the S385-33 to replace your balances. To confirm the correct series, you'll need to measure the depth of your shoe.

For the stamp, you'll need the 3270. A pair of these balances will support a sash weighing 39 to 42lbs.

Comparison of the S378, S380 and S385 balance shoes.