We are able to see that it says 11600-17 on one side. It looks like the other side says B07 7/27 123 but it's hard to say.
Casey from SWISCO responded:
September 28, 2023
Hello,
The 727 stamp on your assembly indicates that you would need the 24-737 Andersen sash balance for your repair. Take a look and let us know if you have any other questions. Thank you!