Caldwell channel balance

Thanks for your photos. Based on what I see here, you have either our S351-25 or S390-25, 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.

Concerning the stamp option, you will need a precise sash weight for that. Estimations will not suffice. Once you have an exact weight, you can simply refer to the chart shown on each balance's store page to pick the best option.

Comparison of the S351 and S390 balance shoes.