What coil balance model is this?

Question

Hello. Looking for a replacement coil balance. There is a number 5 on the coil. Do you have this model?

Thank you.

Aaron

Casey · Accepted Answer

Hello,

It looks like you may have a version of the 15-140 balance shoe. The determining factor would be how the width and thickness shown below compares to yours.

Alternate image for 15-140

This shoe is used with the S150 coil springs. Your 5 stamp would correspond to the S150-5. Also, see the 15-143, 15-144, and 15-145 cover pieces for these coil springs. Thanks for posting!