25 5 BSI mg, 1/2 Iinch metal channel, 26 inches long

Thanks for posting. Start by looking at our S380-26 or S385-26. The only difference between these two balances is the 'depth' of the bottom nylon shoe, or the measurement from heel-to-toe. See the diagram below for reference. Compare both with your old balance and see which matches best. In either case, for a stamp option choose 2550.

Comparison of the S380 and S385 balance shoes.