Watch work.Outer edge adjustment of hairspring.Pick up hairspring. 髭発条外端修正と髭持直し
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Watch work.Repairing the screw inside Rolex Crown. Making Tube. 竜頭内螺子修理・竜頭管製作
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How to repair a bent hairspring watch repair tutorials
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Timeless Revival: Restoring a Zenith El Primero Rainbow to GloryEl Primero Rainbow
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修理、魅せます。 #005「時計」
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Citizen 6000 Mechanical Watch Restoration & Servis
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Straightening a hairspring for a ladies watch
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The Structure of Mechanical Watches
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