Certina 19-55-724, Balance staff

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  Certina original part, not in factory packaging.

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  Fits cal: 19-55, 19-551

Versions:

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  19-25: manual wind, 18.000 A/h.
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  19-251: manual wind, 18.000 A/h, date.
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  19-26: manual wind, 18.000 A/h.
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  19-35: manual wind, 19.800 A/h.
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  19-351: manual wind, 19.800 A/h, date.
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  19-36: manual wind, 19.800 A/h, modifications.
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  19-45: automatic wind, 18.000 A/h.
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  19-451: automatic wind, 18.000 A/h, date.
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  19-55: automatic wind, 19.800 A/h.
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  19-551: automatic wind, 19.800 A/h, date.