Suitable replacement for 27" with "26 4 eu cmc 4" stamp?

Question

As the title says, I want to replace my channel balance of 1/2 inch width and 27 inch length. The sash weighs 25 pounds. The balance stamp reads "26 4 eu cmc 4". Would a pair of 27 inch series 380 with 2640 stamp option balances do the trick? Thank you!

Bob · Accepted Answer

Good deduction. I do think the S380-27 is likely what you need. The only other possible is the S385-27. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the image below to help you determine. In either case, use 2640 as a stamp option.

Comparison of the S378, S380 and S385 balance shoes.