Channel Balance

Thanks for posting. This looks like either an S378-30, S385-30, or S380-30. The only difference between these three balances is the 'depth' of the bottom nylon shoe. See below. Measure your old balance to see what matches best. For the balances stamped 2950, choose that as your stamp option; for 2920, choose that as the option.

Comparison of the S378, S380 and S385 balance shoes.

Photos of measuring tape can be hard to read accurately, but if they're all 7/8" deep then yes, the Series 378 balances are what you need. Let us know if you have further questions.