likely S380 24" compatible part - need confirmation

Hi, I need confirmation if my window balances are S380 24".
Here is what I know, the length of the metal is 24" the width about 9/16"
The top and bottom nylon pieces lead me to believe that it is a S380 since it is 1" in depth.
The big mystery is the stamping on the metal. Referring to IMG-6903.JPG it appears that the stamping is as follows:

23B N

this can best be seen from the part on the left.
The "2" is very faint. The "3" also is faint. The "B" is easily visible.
The "N" is easily visible. Also visible is a symbol similar to "