Searching for 160 bsi pj

It looks like you have either our S351-17, with a 15-002 bottom attachment, or S390-17, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need since the bottom shoe is the only difference between the two. You'll also need to double check the length of your balance. Your stamp indicates that it should be 17", but measure the metal channel to be sure. Thank you!

Comparison of 15-001 & 15-002