Need replacement parts
Thanks for writing in! The balance you have here is the S795-27 Channel Balance assembled with a 15-195 1-1/4" T-Lock shoe and a 15-198 Balance Clip Attachment. There is a chance this may need to be a custom assembly but that will depend on the shape of the hook where that top hook installs. Can you confirm whether or not that installation hole is square in shape or another shape?
In regard to the other balances, they are likely to be the same style but you'll need to double check the length of the balance, the stamp, and the installation holes in the window if they have hooks as well.
Please don't hesitate to reach out with any questions you might have.
Thanks for the photo! Based on the cutout where the hook installs, this will need to be a custom assembly. I am happy to provide you with a link to purchase the balances but I'll just need to know the exact number of balances you are looking to purchase.
Please let me know if you have any questions.