I am looking for this type of balance for a single hung tilt window. The only marking I can find is a symbol that looks like "B" and 932 stamped on the coil spring and a number 3 printed on the inside of the slot.
Tom from SWISCO responded:
May 3, 2022
Certainly! If all you needed was the spring, then I recommend the S190-940. However we also sell the 15-180 shoe, 15-186 clip, and 15-182 bushing if you cannot reuse the originals.