There are no markings on anything.

Thanks for posting! There is a chance we may be able to provide you with a replacement for the balances you need but I'll need to a bit more information to confirm. To start, I'll need to see a photo of an undamaged balance, removed from the window, to identify it. Unfortunately, the photos provided do not show enough information to properly identify what you have.

Once I have a better idea of the balance you have, we can move forward from there.

Please don't hesitate to reach out with any questions you might have.