16" long, 1/2" wide 14 4 DN Caldwell stamped on the part
Bob from SWISCO responded:
June 11, 2020
Looks like you have either an S380-15 or S385-15. The only difference between these two balances is the depth of the bottom nylon shoe, so compare both with your old hardware to see what matches best. You'll need a stamp option of 1440.