HATTORY-SEIKO 8N20BrandHATTORY-SEIKOCaliber8N20SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4018N20Winding stem035138898403513884018N20Winding stem03513879840351387.8N20MAIN PLATE(PLASTIC)01003879840100387.8N20TRAIN WHEEL BRIDGE01253969840125396.8N20FOURTH WHEEL AND PINION02413859840241385.8N20CENTER MINUTE WHEEL02703939840270393.8N20CENTER MINUTE WHEEL02703949840270394.8N20Hour wheel02714339840271433.8N20Hour wheel02714359840271435.8N20Setting lever03833879840383387.8N20BACK PLATE89940095