coil balance 152

A quick learner from Philadelphia, PA says:
I have an old caldwell sash balance, and the coil balance
broke. The drum is 2" in diameter. Will your coil balance
152 series fit over this drum?
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Paul from SWISCO responded:
Good Morning,

Can you submit a couple quick photos of your coil balance? Are there any stamps on the balance? We may also need your window sash weight if you don't have any stamps on the coil portion of the balance.

All of this information will help us research possible replacement coil balances.
A home owner from Philadelphia, PA says:
The stamp on the balance is OCT.30.88
. These No 10 balance have a sash
weight of 8 to 10 lbs. The 1st
photo attached shows the balance on
the top assembled, on the bottom
disassembled. The 2nd show the brass
strap that attaches to the sash. This
is what I'm trying to replace. Thank
User submitted photo of caldwdell sash balance No 10.
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Paul from SWISCO responded:
After researching this coil balance we have come to the conclusion that this product is no longer available for purchase.

I am sorry that we were unable to help you locate a replacement.
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