balance

Question

I need to get at least 2 of these but I might order more if I can get free shipping. The number on the side is 1940 RM
The ends don't have the little flaps on the side like I have seen on some of your products

Casey · Accepted Answer

Hello,

It looks like you have either our S351-20, with a 15-002 bottom attachment, or S390-20, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 1940 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.