Channel Balance # 2940

Thank you for your pictures. It appears you have either an S380 or S385 balance. The difference between the two balances lies in the shoe, as pictured below.

Comparison of the S378, S380 and S385 balance shoes.

The series 385 balance has the 15-004 shoe which is slightly larger from front to back, as illustrated.

If you measure your shoe as it is pictured here, you should be able to determine which one you need.