2915 Channel Balance Identification

Thanks for your photos. Based on what I see here, you have either our S380-30 or S385-30, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

There's also the matter of your stamp. 2915 is very, very peculiar. In your case I think you should weigh yours ash on a scale and tell me exactly what you get. That way we can know for sure how your spring ought to be calibrated and whether one of our standard options will be enough.

Comparison of the S378, S380 and S385 balance shoes.