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    Original Seiko winding stems – precise replacement parts for movements

    Original Seiko winding stems offer maximum precision and reliable functionality for numerous movements. They are ideal for repairs, overhauls and the replacement of worn components.

    namewinding stems

    manufactureSeiko

    calibreY121

    part No.354-788

    Thread-Ø0.90 mm

    replaceabilityAL21

    item No.9840354788

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