19-9 stamp

A quick learner from Vancouver wa says:
Which balance option should I choose if mine has a 19-9 stamp? 1910?1920? Etc.
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Tom from SWISCO responded:

Stamps ending in a "-9" suffix tend to use a somewhat outdated rating system. One of our stamps may work but I need a little more info before I say anything for sure.

To start, would it be possible to see photos of the top and bottom nylon fitting and the metal hook at the end of the cord? Can you also show me a photo of the stamp itself? Finally, what is the exact weight of the sash? That information will give me a better idea of what configuration this balance has and whether any of our standard options can work.

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