Thanks for posting. See our S385-27. Just compare all the dimensions and specifications listed on the product page and let us know if you think this matches your old balance. You will need to select a stamp option of 2640.
We recommend coating the tracks the balances sit in with silicone spray to keep them lubricated. We prefer silicone spray over WD-40 because it doesn't attract dirt. Often, WD-40 tends to gunk up the works a bit.