Window balancer

Thanks for posting. With the bottom attachment damaged it is tough to say for sure, but I suspect this is an S377-24 Channel Balance, with a stamp option of 2320. I would remove an undamaged balance and compare just to be safe. See what you find.

Thanks for these new photos. Based on all this, I do think its the S377-24 with a stamp option of 2320. The stamp is not a model number, it just reflects the strength of the balance. Let us know if you have further questions.