23" long
3/4" depth
422c

Quick Learner
Jun 24, 2024 9:10 am
4 user uploaded images
2 Replies

Casey from SWISCO
Jun 26, 2024 1:33 pm


Hello,
It looks like you have either our S351-23, with a 15-002 bottom attachment, or S390-23, 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 2230 spring strength option for your replacement balances if the originals are stamped with 22C. Thank you!

Comparison of the S351 and S390 balance shoes.
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