Need part #s

Thanks for your photos. Based on what I see here, you have either our S380-27 or S385-27, 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.

As for the stamp, having two different stamps in the same window is problematic. They need to be identical. Since we aren't sure which one is correct, your only option is to weigh your sash on a scale. We have a chart on each balance's store page that tells you precisely how much weight each option supports, so all you have to do is pick one accordingly.

Comparison of the S380 and S385 balance shoes.