Kolbe ribbed channel balances

A handy person from USA says:
Do you have Kolbe Kolbe replacement balances? I have a customer with a full house full of these and they are all broken. Please see the attached photos.

And which pivot pins go with the 751 series?
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Tom from SWISCO responded:

It sounds like you already identified the balance, which is our Series 751. As for the pivots, I recommend the 26-150.

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