Balance ID

A quick learner from USA says:
The metal channel is 33" long, 9/16" wide and 1/2" deep.
It has markings: 33E BS1.
No top guide is attached but there is a hole in the top for screwing to window frame.
The bottom guide is broken.
There is a little handle attacked to the string end and hook up the shoe in the frame.

User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Take a look at our Series 770 channel balance and see if this matches your hardware. As for the shoe, how about our 15-129?
A quick learner from Annandale, VA says:
Thank you Paul, for your answer!
Both parts are exact matches.
I actually ordered from SWISCO.

At first I missed the Series 770 from the non-tilt choice path on your website.
Later I hit it by chance and the pictures helped me to id it.

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