Tom from SWISCO responded:
July 26, 2017
This looks a lot like our Series 770 channel balance. Take a look and see what you think. You will need the stamp from the old balance to determine the best option. As for the shoe, see our 15-129. This may be a good match but I recommend going over our dimensions to confirm.
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Tom from SWISCO responded:
July 26, 2017
Yep! A stamp is any kind of numbers either stamped on or engraved into the balance. It's indicative of the spring strength rating. You can see a list of stamp options we have on every Series 770 store page and how much weight each one can support.
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Tom from SWISCO responded:
July 31, 2017
Thanks! That stamp is a little atypical. I think your best bet is to weigh your sash on a scale to confirm the best option.
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