need help identifying this balance

Thanks for writing in! There is a chance that we can provide you with a replacement balance, however, to be absolutely sure, I'll need to see a photo of an undamaged balance removed from the window.

Although the balance may appear to look like the S751-27, it may not have the same attachments that this balance does. There are times the balance attachment looks slightly similar to the standard balance but it actually may be a custom attachment. So to ensure that we are providing you with the most accurate replacements, it would be best to see a photo the shoe in the last photo removed from the window.

Let me know if you have any questions.

It appears that are correct. The Series 751-27 is the replacement balance you'll need for your window. Your balance shoe appears to have a blue version of the 15-014 knife lock shoe. The 26TG stamp is made for a window weighting 24 to 31lbs so that will be the stamp you need to select.

You may also need either the 19-029 Short S-Clip or the 19-030 Long S-Clip. Double check the window channel or the existing balances to confirm if you'll need either of them.

Please let me know if there is anything else I can assist with.